WO1996011740A1 - Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium, de cuivre ou d'antimoine - Google Patents
Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium, de cuivre ou d'antimoine Download PDFInfo
- Publication number
- WO1996011740A1 WO1996011740A1 PCT/FR1995/001302 FR9501302W WO9611740A1 WO 1996011740 A1 WO1996011740 A1 WO 1996011740A1 FR 9501302 W FR9501302 W FR 9501302W WO 9611740 A1 WO9611740 A1 WO 9611740A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- niobium
- catalytic
- antimony
- copper
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 81
- 239000010949 copper Substances 0.000 title claims abstract description 57
- 239000010955 niobium Substances 0.000 title claims abstract description 47
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052758 niobium Inorganic materials 0.000 title claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 29
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052787 antimony Inorganic materials 0.000 title claims abstract description 22
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 20
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 20
- 239000003054 catalyst Substances 0.000 title claims abstract description 19
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 33
- 230000000737 periodic effect Effects 0.000 claims abstract description 12
- 239000011701 zinc Substances 0.000 claims abstract description 12
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052737 gold Inorganic materials 0.000 claims abstract description 4
- 239000010931 gold Substances 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 229910052718 tin Inorganic materials 0.000 claims description 9
- 229910052733 gallium Inorganic materials 0.000 claims description 8
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical class O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910000311 lanthanide oxide Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 claims 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- XLUBVTJUEUUZMR-UHFFFAOYSA-B silicon(4+);tetraphosphate Chemical class [Si+4].[Si+4].[Si+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XLUBVTJUEUUZMR-UHFFFAOYSA-B 0.000 claims 1
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 1
- 238000001354 calcination Methods 0.000 description 30
- 239000000243 solution Substances 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 15
- 238000005470 impregnation Methods 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- CHPZKNULDCNCBW-UHFFFAOYSA-N gallium nitrate Chemical compound [Ga+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CHPZKNULDCNCBW-UHFFFAOYSA-N 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- -1 bayerite Chemical compound 0.000 description 4
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229940044658 gallium nitrate Drugs 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 2
- XURCIPRUUASYLR-UHFFFAOYSA-N Omeprazole sulfide Chemical compound N=1C2=CC(OC)=CC=C2NC=1SCC1=NC=C(C)C(OC)=C1C XURCIPRUUASYLR-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910001679 gibbsite Inorganic materials 0.000 description 2
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000003891 oxalate salts Chemical class 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2 ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 0.000 description 1
- JVKRKMWZYMKVTQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JVKRKMWZYMKVTQ-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical group OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical class CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 description 1
- SZXAQBAUDGBVLT-UHFFFAOYSA-H antimony(3+);2,3-dihydroxybutanedioate Chemical group [Sb+3].[Sb+3].[O-]C(=O)C(O)C(O)C([O-])=O.[O-]C(=O)C(O)C(O)C([O-])=O.[O-]C(=O)C(O)C(O)C([O-])=O SZXAQBAUDGBVLT-UHFFFAOYSA-H 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical group [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 1
- 229910001680 bayerite Inorganic materials 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- JKAYFQPEIRPZPA-UHFFFAOYSA-N lanthanum neodymium Chemical compound [La][Nd] JKAYFQPEIRPZPA-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910001682 nordstrandite Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052566 spinel group Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- IHIXIJGXTJIKRB-UHFFFAOYSA-N trisodium vanadate Chemical compound [Na+].[Na+].[Na+].[O-][V]([O-])([O-])=O IHIXIJGXTJIKRB-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/847—Vanadium, niobium or tantalum or polonium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/18—Arsenic, antimony or bismuth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/20—Vanadium, niobium or tantalum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/208—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20723—Vanadium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
Definitions
- the present invention relates to catalytic compositions based on tantalum, vanadium, niobium, copper or antimony for the reduction of emissions of nitrogen oxides (NO x ) in the treatment of a gas.
- NO x nitrogen oxides
- the object of the invention is therefore to provide a catalytic composition having an effect for the reduction of NOx.
- the catalytic composition according to a first embodiment of the invention for the reduction of emissions of nitrogen oxides in the treatment of a gas with a high oxygen content is characterized in that it is based on '' at least one element chosen from the group comprising tantalum, vanadium, niobium and antimony.
- the catalytic composition is characterized in that it is based on at least one element chosen from a first group comprising tantalum, vanadium, niobium and antimony and d '' at least one other element chosen from a second group comprising copper, silver and gold.
- the catalytic composition is characterized in that it is based on at least one element chosen from a first group comprising tantalum, vanadium, niobium, antimony and copper, and at least at least one other element chosen from a second group comprising zinc and the elements of groups IIIb, IVb and Vb of the periodic table.
- the catalytic composition is characterized in that it comprises copper and at least one other element chosen from the group Via of the periodic table.
- compositions of the invention have an action in reducing the emissions of nitrogen oxides either in the treatment of gases or in the presence or in the absence of a hydrocarbon and / or an organic compound containing oxygen. In some cases, these compositions are effective at low temperatures.
- the catalytic composition comprises at least one element chosen from tantalum, vanadium, niobium and antimony.
- the catalytic composition comprises two categories of elements. It in fact comprises at least one element chosen from a first group consisting of tantalum, vanadium, niobium and antimony. It also comprises a second element chosen from a second group consisting of copper, silver and gold.
- the catalytic composition also comprises two categories of elements. It first comprises at least one element chosen from a first group consisting of tantalum, vanadium, niobium, antimony and copper, and at least one other element chosen from a second group comprising zinc and the elements of groups Illb, IVb and Vb of the periodic table.
- group IIIb use will be made more particularly of gallium and indium.
- group IVb mention will be made of tin in particular and antimony and bismuth for group Vb.
- compositions according to the second embodiment and those of the third embodiment based on tantalum, vanadium, niobium and antimony have the advantage of being effective at low temperature.
- the composition comprises copper and at least one other element chosen from the Via group of the periodic table.
- compositions of the invention can also comprise a support.
- any support usually used in the field of catalysis can be used, such as, for example, ZrO 2 , AI 2 O 3 , TiO 2 or SiO 2 .
- lanthanide oxides such as CeO 2
- these supports possibly being doped, or alternatively spinel type oxides, zeolites, silicates, crystalline silicoaluminum phosphates, crystalline aluminum phosphates, these silicates or phosphates which can comprise metal substituents such as titanium, iron, magnesium, zinc, manganese, cobalt, gallium, lanthanum, copper, molybdenum, chromium, germanium or boron.
- cerium oxide can be used as a support.
- alumina resulting from the rapid dehydration of at least one aluminum hydroxide such as bayerite, hydrargillite or gibbsite, nordstrandite and / or at least one aluminum oxyhydroxide such as boehmite, pseudoboehmite and diaspore.
- aluminum hydroxide such as bayerite, hydrargillite or gibbsite, nordstrandite and / or at least one aluminum oxyhydroxide such as boehmite, pseudoboehmite and diaspore.
- a stabilized alumina As stabilizing element, mention may be made of rare earths, barium, silicon and zirconium. As rare earth there may be mentioned very particularly lanthanum or the neodymium lanthanum mixture.
- titanium oxide it is also possible to use an oxide stabilized for example by a rare earth such as lanthanum, barium, strontium, phosphorus, silicon, zirconium or aluminum.
- a rare earth such as lanthanum, barium, strontium, phosphorus, silicon, zirconium or aluminum.
- the elements described above and constituting the composition may be present in the latter under different types of phases generally in the form of oxides or mixed oxides, these mixed oxides possibly containing certain elements of the support in the case of the supported compositions .
- compositions of the invention can vary within wide proportions.
- the invention therefore applies to compositions in which tantalum, vanadium, niobium, antimony and copper are in the majority in atomic percentage relative to the other elements such as those where these other elements are in the majority.
- this amount is generally between 1 and 50% and more particularly, in particular in the case of copper, between 10 and 50%, expressed in atomic content of element relative to the sum of atoms of support elements and moles.
- compositions of the invention can finally comprise precious metals of the type conventionally used in catalysis and in particular in catalysis of automobile afterburning.
- compositions which comprise copper and at least one other element chosen from the groups Va, IIIb, IVb and Vb of the periodic table and a cerium oxide support.
- compositions essentially comprising the elements mentioned above that is to say the compositions in which it is these only elements which have a catalytic action, optionally in combination with precious metals of the type described. above.
- the catalytic compositions of the invention can be prepared by any process which makes it possible to obtain an intimate mixture of the constituents of the compositions of the invention. Various methods can be mentioned by way of example.
- these compositions are obtained by chamotte of precursors of the elements and, where appropriate, of the support.
- These precursors are generally oxides, hydroxides, carbonates or oxalates. They are mixed and ground then optionally shaped under pressure, for example pellets. The mixture is then calcined.
- a solution or a slip of salts of the elements and, where appropriate, of the support is first formed.
- salts one can choose the salts of inorganic acids such as nitrates, sulfates or chlorides.
- salts of organic acids and in particular the salts of saturated aiiphatic carboxylic acids or the salts of hydroxycarboxylic acids.
- either the solution or the slip is precipitated by adding a precipitating agent in the presence, if necessary, of the support, or it is atomized before calcination.
- a soil can be used instead of a salt of the elements.
- the process is carried out by impregnating the support with a solution or a soil of the abovementioned elements. After impregnation, the support is optionally dried and then it is calcined.
- the solutions that can be used are the same as those described above.
- alcoholic solutions of these elements are more generally used, in particular solutions of chlorides.
- compositions according to the second or third embodiment of the invention For the preparation by impregnation of a composition according to the second or third embodiment of the invention, it is possible either to co-impregnate the elements of the different groups, or to proceed in two stages.
- the support is first impregnated with a solution of one of the two groups of elements.
- the support is optionally dried.
- the support is impregnated with a solution of an element from the other group.
- drying and calcining the support thus impregnated.
- Dry impregnation consists in adding to the product to be impregnated a volume of an aqueous solution of the element which is equal to the pore volume of the solid to be impregnated.
- compositions of the invention can be in various forms such as granules, balls, cylinders or honeycomb of variable dimensions.
- the invention also relates to a catalytic system comprising a composition of the type which has been described above, for example a system comprising a coating of known composition, in particular based on a refractory oxide (wash coat) and based on these compositions, on a substrate of the type, for example metallic or ceramic monolith.
- a catalytic system comprising a composition of the type which has been described above, for example a system comprising a coating of known composition, in particular based on a refractory oxide (wash coat) and based on these compositions, on a substrate of the type, for example metallic or ceramic monolith.
- the systems are mounted in a known manner in catalytic devices such as vehicle exhaust pipes in the case of application to the treatment of exhaust gases.
- the invention therefore applies to the manufacture of catalysts or catalytic devices using the compositions or systems described above.
- gases capable of being treated by the compositions of the present invention are, for example, those originating from gas turbines, boilers of thermal power stations or else from internal combustion engines, in particular from diesel engines or engines operating in lean mixture .
- the invention applies to the treatment of gases which have a high oxygen content and which contain nitrogen oxides, with a view to reducing the emissions of these oxides.
- the value ⁇ is correlated to the air / fuel ratio in a manner known per se in particular in the field of internal combustion engines.
- the invention applies to the treatment of gases from systems of the type described in the previous paragraph and operating continuously under conditions such as ⁇ is always strictly greater than 1.
- the invention also applies to the treatment of gases which have an oxygen content (expressed by volume) of at least 5%, more particularly at least 10%, this content being able for example be between 5 and 20%.
- the gases can contain a reducing agent or be treated in the presence of a reducing agent such as a hydrocarbon and, in such a case, one of the reactions which it is sought to catalyze is the reaction HC (hydrocarbon) + NO x .
- the hydrocarbons which can be used as a reducing agent for the elimination of NOx are in particular the gases or liquids of the families of saturated carbides, ethylenic carbides, acetylenic carbides, aromatic carbides and hydrocarbons from petroleum fractions such as for example methane , ethane, propane, butane, pentane, hexane, ethylene, propylene, acetylene, butadiene, benzene, toluene, xylene, kerosene and gas oil.
- the gases can also contain, as reducing agent, organic compounds containing oxygen or be treated in the presence of these.
- organic compounds may especially be alcohols of the type, for example saturated alcohols such as methanol, ethanol or propanol; ethers such as methyl ether or ethyl ether; esters such as methyl acetate and ketones.
- the treatment process can be carried out on a gas without the presence of a reducing agent.
- a reducing agent which comprise copper and at least one other element chosen from the groups Va, Illb, IVb and Vb of the periodic table and a support made of cerium oxide.
- compositions are tested in the following manner to evaluate their catalytic performance.
- the reaction mixture at the inlet of the reactor has the following composition (by volume):
- the overall flow rate is 10 Nl / h.
- the VVH is of the order of 10,000 h '1 .
- the NO and NO x signals are given by a NO x ECOPHYSICS analyzer, based on the principle of chemistry-luminescence: it gives the values of NO and NO x .
- the catalytic activity is measured from the NO and NO x signals as a function of the temperature during a programmed temperature rise from 20 to 700 ° C at a rate of 3.75 ° C / min and from the following relationships:
- TNO NO conversion rate
- This example relates to compositions based on niobium.
- the support used is undoped alumina, calcined at 1090 ° C for 8 h to reduce its specific surface to 28 m 2 / g before deposition of the active elements.
- the atomic content of active element is 10% calculated as follows:
- the operating protocol is as follows:
- Examples 1 -3, 1-4 and 1-5 show a very good level of activity, for the specific surface considered ( ⁇ 25 m 2 / g), with a maximum NO x conversion greater than 30% at 500 ° C approx.
- the NO x conversion temperature range is very wide (between 350 ° C and 600 ° C approximately for an NO x conversion greater than 20%).
- a reaction initiation temperature below 200 ° C for Examples 1-3 and 1-4, which is very advantageous for a diesel engine.
- Example 1-1 the conversion takes place over a wide temperature range between about 250 ° C and 400 ° C.
- the initiation temperature of the NO x conversion reaction is also less than 200 ° C.
- Example 1-2 gives intermediate results between the previous examples.
- This example relates to tantalum-based compositions.
- Examples 2-3, 2-4 and 2-5 show a very good level of activity, for the specific surface considered ( ⁇ 25 m 2 / g), with a maximum NO x conversion greater than 30% at 500 ° C approx.
- the NO x conversion temperature range is very wide between 350 ° C. and 550 ° C. approximately for an NO x conversion greater than 20%.
- This example relates to a composition based on vanadium.
- Copper nitrate (Cu (NO 3 ) 2 , 3H 2 O) and sodium orthovanadate (Na 3 VO 4 ) are used in aqueous solution.
- the support used is the same as that of Example 1.
- the vanadium and copper contents are identical to those of Example 1, as well as the operating protocol.
- - a relatively wide activity temperature range, of approximately 100 ° C., between 450 ° C. and 550 ° C. in which the NO x conversion remains greater than 20%.
- compositions based on a single active element This example illustrates compositions based on a single active element.
- compositions are prepared with the same support as Example 1 and for niobium and tantalum the same precursors as Examples 1 and 2.
- antimony the precursor is antimony tartrate; for vanadium, it is ammonium vanadate.
- the products obtained have the following characteristics:
- EXAMPLE 5 This example illustrates a composition based on antimony and copper on a titanium support.
- the product is prepared in the same manner as in Example 1.
- the precursor is tartrate.
- the support is TiO 2 , a mixture of anatase and rutile with a surface area of 60 m 2 / g.
- the product obtained has the following characteristics:
- a composition based on niobium and gallium is prepared as in Example 1.
- the support used is an alumina.
- the test is carried out with a VVH of 100,000 h -1 and 150 mg of product.
- This example relates to compositions based on copper.
- the support used is undoped alumina, calcined at 1080 ° C for 8 h to reduce its specific surface to 37 m 2 / g before deposition of the active elements.
- the atomic content of active element is 10% calculated as follows:
- the operating protocol is as follows:
- This example relates to compositions based on copper and comprising a CeO 2 support.
- compositions are tested by using 50 mg of these in the form of powder with a particle size of 125-250 ⁇ m diluted in 150 mg of SiC with the same particle size.
- the total gas flow rate is 30NI / h.
- the WH is 500000h -1 .
- composition of the treated gas mixture is that given above in the preamble to Example 1, with a CO content of 350 vpm.
- the raw materials used are copper nitrate (Cu (NO 3 ) 2 , 3H 2 O), gallium nitrate (Ga (NO 3 ) 3 ) in solution, bismuth nitrate (Bi (NO 3 ) 3 5H 2 O), platinum (H 2 PtCl 6 ), an alcoholate and a niobium sol and a tin sol.
- the niobium alcoholate is obtained by dissolving niobium chloride in an ethanolic medium at 70 ° C for 2 hours with stirring.
- the niobium sol is obtained by precipitation of the niobium alcoholate in an ammoniacal medium.
- the tin sol is prepared by adding volume to volume of a solution of NH 4 OH
- the supports used are cerium oxide CeO 2 RHONE-POULENC
- the atomic content of active element is 10% relative to the number of moles of the cerium oxide, ie:
- the preparation method is a dry impregnation which is carried out under the same conditions as those of Example 1.
- the calcination is carried out in air, at 750 ° C for 2 hours, mounted at 5 ° C / min.
- the impregnation was done on a support doped with platinum, the amount of platinum in the composition being 2500 ppm. Niobium is introduced by the alcoholate.
- Example 8-9 this example is carried out with the composition of example 8-8 but the catalyst was aged 6 hours at 750 ° C. under a gas flow of 100NI. h -1 to 10% of O 2 . 10% CO 2 and 10% 2 O.
- the products were prepared by the atomization method.
- a slip is formed having a concentration of reagents expressed as an oxide of 180 g / l. Niobium is introduced as a soil. This slip is then atomized with a Buchi atomizer with an inlet temperature of 220 ° C and an outlet temperature of 130 ° C. We calcine as in the previous examples.
- Examples 8-1 and 8-2 demonstrate that the Cu-Sn / CeO 2 compounds are active with respect to the reduction of NO x emissions in the presence or not of a reducing agent of the HC type and / or CO. It will be noted that the catalytic activity is both higher and obtained at lower temperature in the absence of a reducing agent of the HC and / or CO type in the reaction mixture.
- Examples 8-3 and 8-4 demonstrate that the Cu-Ga / CeO 2 compounds are active with respect to the reduction of NO x emissions in the presence or absence of a reducing agent of the HC type and / or CO. It will be noted that the catalytic activity is both higher and obtained at lower temperature in the absence of a reducing agent of the HC and / or CO type in the reaction mixture.
- Examples 8-5 and 8-6 demonstrate that systems of the Cu-Nb / CeO 2 type are active with respect to the reduction of NO x emissions in the absence of a reducing agent of the HC type and / or CO. Formulations with an excess of Cu over Nb (expressed in atoms) are even more active under these conditions.
- Examples 8-8 and 8-9 makes it possible to demonstrate the stability of the performance of the catalyst after a thermal aging treatment for 6 hours at 750 ° C. in the presence of water, CO 2 , and oxygen in the gas mixture.
- the catalytic activity did not decrease as a result of this treatment.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970702403A KR970706888A (ko) | 1994-10-13 | 1995-10-06 | 탄탈륨, 바나듐, 니오븀, 구리 또는 안티몬을 기재로하는 질소 산화물 감소용 촉매 조성물(nitrogen oxide reducing catalyst compositions based on tantalum, vanadium, niobium, copper or antimony) |
MX9702654A MX9702654A (es) | 1994-10-13 | 1995-10-06 | Composiciones cataliticas para la reduccion de oxidos de nitrogeno, basadas en el tantalio, vanadio, niobio, cobre o antimonio. |
EP95934177A EP0785820A1 (fr) | 1994-10-13 | 1995-10-06 | Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium, de cuivre ou d'antimoine |
JP8512976A JPH10502020A (ja) | 1994-10-13 | 1995-10-06 | タンタル、バナジウム、ニオブ、銅又はアンチモンを基とする、窒素酸化物を減少させるための触媒組成物 |
AU36567/95A AU700120B2 (en) | 1994-10-13 | 1995-10-06 | Catalytic compositions for the reduction of nitrogen oxides, based on tantalum, vanadium, niobium, copper or antimony |
BR9509354A BR9509354A (pt) | 1994-10-13 | 1995-10-06 | Composição catalítica para a redução das emissões dos óxidos de nitrogénio no tratamento de um gás com teor elavado de oxigénio sistema catalitico processo de tratamento de gases com um teor elevado de oxigénio para a redução da emissões dos óxidos de nitrogénio e utilização da composição ou do sistema catalitico |
FI971497A FI971497L (fi) | 1994-10-13 | 1995-10-06 | Tantali-, vanadiini-, niobi-, kupari-, tai antinomipohjaiset typpioksidin pelkistyskatalyyttiseokset |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9412200A FR2725638A1 (fr) | 1994-10-13 | 1994-10-13 | Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium ou d'antimoine |
FR94/12200 | 1994-10-13 | ||
FR94/14511 | 1994-12-02 | ||
FR9414511A FR2727636A1 (fr) | 1994-12-02 | 1994-12-02 | Compositions catalytiques a base de cuivre pour la reduction des emissions des oxydes d'azote |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996011740A1 true WO1996011740A1 (fr) | 1996-04-25 |
Family
ID=26231464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/001302 WO1996011740A1 (fr) | 1994-10-13 | 1995-10-06 | Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium, de cuivre ou d'antimoine |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0785820A1 (fr) |
JP (1) | JPH10502020A (fr) |
KR (1) | KR970706888A (fr) |
CN (1) | CN1171062A (fr) |
AU (1) | AU700120B2 (fr) |
BR (1) | BR9509354A (fr) |
CA (1) | CA2202185A1 (fr) |
FI (1) | FI971497L (fr) |
MX (1) | MX9702654A (fr) |
WO (1) | WO1996011740A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10350581B2 (en) | 2012-12-27 | 2019-07-16 | Mitsui Mining & Smelting Co., Ltd. | Catalyst composition for exhaust gas purification and catalyst for exhaust gas purification |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5716603B2 (ja) * | 2010-08-24 | 2015-05-13 | 株式会社豊田中央研究所 | Scr触媒、排ガス浄化フィルタ、及び排ガス浄化装置 |
FR2972366B1 (fr) * | 2011-03-08 | 2016-01-15 | Rhodia Operations | Procede de traitement d'un gaz contenant des oxydes d'azote (nox) utilisant comme catalyseur une composition a base de zirconium, de cerium et de niobium |
CN105377421B (zh) * | 2013-07-10 | 2018-08-24 | 株式会社科特拉 | 排气净化用催化剂 |
CN107376992A (zh) * | 2016-05-15 | 2017-11-24 | 北京工业大学 | SAPO-34负载Cu和Nb复合型催化剂的制备方法和应用 |
CN106732531B (zh) * | 2016-12-09 | 2020-07-28 | 大唐国际化工技术研究院有限公司 | 一种scr脱硝催化剂及其制备方法和用途 |
CN106861674A (zh) * | 2016-12-30 | 2017-06-20 | 大连瑞克科技有限公司 | 一种低温scr烟气高效脱硝催化剂及其制备方法 |
CN106861675A (zh) * | 2016-12-30 | 2017-06-20 | 大连瑞克科技有限公司 | 堇青石蜂窝陶瓷为基体的整体式低温脱硝催化剂及其制备方法 |
KR102067668B1 (ko) * | 2018-03-02 | 2020-01-17 | 한국과학기술연구원 | 질소산화물 환원용 촉매 및 이를 이용한 질소산화물 환원 시스템 |
RU2709811C1 (ru) * | 2018-10-22 | 2019-12-23 | Пуцзин Кемикал Индастри Ко., Лтд | Катализатор очистки хвостового газа угольного этиленгликоля, а также способ его получения |
CN112354358B (zh) * | 2020-09-17 | 2022-07-22 | 山东骏飞环保科技有限公司 | 催化裂化贫氧再生脱硝剂及其制备方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4131643A (en) * | 1975-09-05 | 1978-12-26 | Kobe Steel Limited | Catalyst for converting nitrogen oxides and method for converting nitrogen oxides in exhaust gases by using said catalyst |
EP0246859A1 (fr) * | 1986-05-19 | 1987-11-25 | Johnson Matthey, Inc., | Catalyseurs sélectifs de réduction catalytique |
EP0294204A2 (fr) * | 1987-06-05 | 1988-12-07 | Babcock-Hitachi Kabushiki Kaisha | Procédé de fabrication d'un catalyseur pour la dénitrification par réduction catalytique à l'aide de l'ammoniac |
EP0385958A2 (fr) * | 1989-02-27 | 1990-09-05 | Eka Nobel Aktiebolag | Catalyseur pour la réduction des oxydes d'azote, procédé pour sa préparation et son utilisation |
EP0469593A1 (fr) * | 1990-08-01 | 1992-02-05 | Haldor Topsoe A/S | Procédé pour l'élimination d'oxydes d'azote dans les gaz d'échappement |
GB2256375A (en) * | 1991-05-31 | 1992-12-09 | Riken Kk | Exhaust gas cleaner and method of cleaning exhaust gas |
EP0598178A1 (fr) * | 1992-11-16 | 1994-05-25 | N.E. Chemcat Corporation | Catalysateur pour la purification de gaz d'échappement |
-
1995
- 1995-10-06 CN CN95196196A patent/CN1171062A/zh active Pending
- 1995-10-06 EP EP95934177A patent/EP0785820A1/fr not_active Ceased
- 1995-10-06 BR BR9509354A patent/BR9509354A/pt unknown
- 1995-10-06 FI FI971497A patent/FI971497L/fi unknown
- 1995-10-06 AU AU36567/95A patent/AU700120B2/en not_active Ceased
- 1995-10-06 WO PCT/FR1995/001302 patent/WO1996011740A1/fr not_active Application Discontinuation
- 1995-10-06 KR KR1019970702403A patent/KR970706888A/ko not_active Withdrawn
- 1995-10-06 JP JP8512976A patent/JPH10502020A/ja active Pending
- 1995-10-06 CA CA002202185A patent/CA2202185A1/fr not_active Abandoned
- 1995-10-06 MX MX9702654A patent/MX9702654A/es not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4131643A (en) * | 1975-09-05 | 1978-12-26 | Kobe Steel Limited | Catalyst for converting nitrogen oxides and method for converting nitrogen oxides in exhaust gases by using said catalyst |
EP0246859A1 (fr) * | 1986-05-19 | 1987-11-25 | Johnson Matthey, Inc., | Catalyseurs sélectifs de réduction catalytique |
EP0294204A2 (fr) * | 1987-06-05 | 1988-12-07 | Babcock-Hitachi Kabushiki Kaisha | Procédé de fabrication d'un catalyseur pour la dénitrification par réduction catalytique à l'aide de l'ammoniac |
EP0385958A2 (fr) * | 1989-02-27 | 1990-09-05 | Eka Nobel Aktiebolag | Catalyseur pour la réduction des oxydes d'azote, procédé pour sa préparation et son utilisation |
EP0469593A1 (fr) * | 1990-08-01 | 1992-02-05 | Haldor Topsoe A/S | Procédé pour l'élimination d'oxydes d'azote dans les gaz d'échappement |
GB2256375A (en) * | 1991-05-31 | 1992-12-09 | Riken Kk | Exhaust gas cleaner and method of cleaning exhaust gas |
EP0598178A1 (fr) * | 1992-11-16 | 1994-05-25 | N.E. Chemcat Corporation | Catalysateur pour la purification de gaz d'échappement |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10350581B2 (en) | 2012-12-27 | 2019-07-16 | Mitsui Mining & Smelting Co., Ltd. | Catalyst composition for exhaust gas purification and catalyst for exhaust gas purification |
Also Published As
Publication number | Publication date |
---|---|
FI971497A0 (fi) | 1997-04-10 |
KR970706888A (ko) | 1997-12-01 |
BR9509354A (pt) | 1997-12-30 |
EP0785820A1 (fr) | 1997-07-30 |
AU700120B2 (en) | 1998-12-24 |
FI971497A7 (fi) | 1997-06-10 |
FI971497L (fi) | 1997-06-10 |
CA2202185A1 (fr) | 1996-04-25 |
CN1171062A (zh) | 1998-01-21 |
AU3656795A (en) | 1996-05-06 |
JPH10502020A (ja) | 1998-02-24 |
MX9702654A (es) | 1997-06-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0676232B1 (fr) | L'utilisation d'un catalyseur à base de spinelles pour la réduction des émissions des oxydes d'azote | |
CA2275942C (fr) | Procede de traitement de gaz d'echappement de moteurs a combustion interne fonctionnant avec un carburant contenant du soufre | |
EP2571813B1 (fr) | Composition a base de cerium, de zirconium et de tungstene, procede de preparation et utilisation en catalyse | |
EP1177034B1 (fr) | COMPOSITION D'EPURATION AVEC TRAITEMENT DES NOx DES GAZ D'ECHAPPEMENT D'UN MOTEUR A COMBUSTION INTERNE | |
FR2907445A1 (fr) | Composition a acidite elevee a base d'oxyde de zirconium, d'oxyde de titane et d'oxyde de tungstene,procede de preparation et utilisation dans le traitement des gaz d'echappement | |
FR2748740A1 (fr) | Composition a base d'oxyde de cerium et d'oxyde de zirconium a haute surface specifique et a capacite elevee de stockage d'oxygene, procede de preparation et utilisation en catalyse | |
FR2907444A1 (fr) | Composition a acidite elevee a base d'oxydes de zirconium,de silicium et d'au moins un autre element choisi parmi le titane,l'aluminium,le tungstene,le molybdene,le cerium,le fer et le manganese | |
EP0861116B1 (fr) | Procede de traitement catalytique de gaz, a teneur elevee en oxygene, en vue de la reduction des emissions des oxydes d'azote | |
EP1030732A1 (fr) | Composition a support a base d'un oxyde de cerium, d'un oxyde de zirconium et d'un oxyde de scandium ou de terre rare et utilisation pour le traitement des gaz d'echappement | |
WO1996011740A1 (fr) | Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium, de cuivre ou d'antimoine | |
EP1907102A2 (fr) | Procede de traitement de gaz pour l'oxydation catalytique du monoxyde de carbone et des hydrocarbures utilisant une composition a base d'un metal et d'une zircone comprenant de la silice | |
CA2367536A1 (fr) | Compositions utilisables comme piege a nox, a base de manganese et d'un alcalin ou d'un alcalino-terreux et utilisation dans le traitement des gaz d'echappement | |
MXPA97002654A (en) | Catalytic compositions for the reduction of nitrogen oxides, based on the tantal, vanadio, niobio, copper or antimo | |
FR2765492A1 (fr) | Procede de traitement de gaz pour la reduction des emissions des oxydes d'azote utilisant une composition catalytique avec un support a base de silice et d'oxyde de titane | |
WO2000064580A1 (fr) | COMPOSITION UTILISABLE COMME PIEGE A NOx, A BASE DE MANGANESE ET D'UN ALCALINO-TERREUX OU D'UNE TERRE RARE ET UTILISATION DANS LE TRAITEMENT DES GAZ D'ECHAPPEMENT | |
FR2725638A1 (fr) | Compositions catalytiques pour la reduction des oxydes d'azote a base de tantale, de vanadium, de niobium ou d'antimoine | |
FR2779071A1 (fr) | Aluminate de zinc a surface specifique elevee, son procede de preparation et son utilisation dans le traitement de gaz d'echappement d'automobile | |
FR2750058A1 (fr) | Procede de traitement de gaz pour la reduction des emissions des oxydes d'azote | |
WO1997049481A9 (fr) | Procede de traitement de gaz pour la reduction des emissions des oxydes d'azote | |
FR2727636A1 (fr) | Compositions catalytiques a base de cuivre pour la reduction des emissions des oxydes d'azote | |
FR2765120A1 (fr) | Procede de traitement de gaz pour la reduction des emissions des oxydes d'azote, utilisant un catalyseur a base de ruthenium ou de ruthenium et d'etain | |
WO2003068388A2 (fr) | Dispositif utilisable dans le traitement des gaz d'echappement de moteurs fonctionnant en melange pauvre notamment | |
WO2003068372A2 (fr) | Composition catalytique a base d'au moins deux catalyseurs utilisable dans le traitement des gaz d'echapppement de moteurs. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 95196196.9 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU BR CA CN FI JP KR MX US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1995934177 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2202185 Country of ref document: CA Ref document number: 2202185 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 971497 Country of ref document: FI |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/1997/002654 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019970702403 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 1995934177 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 1997 817266 Country of ref document: US Date of ref document: 19970811 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 1019970702403 Country of ref document: KR |
|
WWR | Wipo information: refused in national office |
Ref document number: 1995934177 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1019970702403 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1995934177 Country of ref document: EP |