JP2010070450A - 高耐熱性β型ゼオライト及びそれを用いたSCR触媒 - Google Patents
高耐熱性β型ゼオライト及びそれを用いたSCR触媒 Download PDFInfo
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- JP2010070450A JP2010070450A JP2009183620A JP2009183620A JP2010070450A JP 2010070450 A JP2010070450 A JP 2010070450A JP 2009183620 A JP2009183620 A JP 2009183620A JP 2009183620 A JP2009183620 A JP 2009183620A JP 2010070450 A JP2010070450 A JP 2010070450A
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- Prior art keywords
- sio
- type zeolite
- molar ratio
- treatment
- scr catalyst
- Prior art date
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- Granted
Links
- 239000010457 zeolite Substances 0.000 title claims abstract description 91
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 89
- 239000003054 catalyst Substances 0.000 title claims abstract description 44
- 238000010335 hydrothermal treatment Methods 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims abstract description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 125000003282 alkyl amino group Chemical group 0.000 claims abstract 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 93
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 67
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 58
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 39
- 229910052742 iron Inorganic materials 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000005004 MAS NMR spectroscopy Methods 0.000 claims description 19
- 238000002425 crystallisation Methods 0.000 claims description 17
- 230000008025 crystallization Effects 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 12
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 2
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 75
- 239000000203 mixture Substances 0.000 description 26
- 239000007864 aqueous solution Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 23
- 239000013078 crystal Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000011541 reaction mixture Substances 0.000 description 19
- 229910001868 water Inorganic materials 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 18
- 239000007789 gas Substances 0.000 description 18
- 150000001412 amines Chemical class 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 238000004400 29Si cross polarisation magic angle spinning Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 229910000323 aluminium silicate Inorganic materials 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000004115 Sodium Silicate Substances 0.000 description 6
- 150000003973 alkyl amines Chemical group 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- -1 silicon alkoxide Chemical class 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 3
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 2
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 2
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 229960001730 nitrous oxide Drugs 0.000 description 2
- 235000013842 nitrous oxide Nutrition 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000011973 solid acid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 2
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 2
- VKABKQBHBBROCU-UHFFFAOYSA-N 2-(2,2,3-trimethylpiperazin-1-yl)ethanamine Chemical compound CC1NCCN(CCN)C1(C)C VKABKQBHBBROCU-UHFFFAOYSA-N 0.000 description 1
- SDMNEUXIWBRMPK-UHFFFAOYSA-N 2-(2-methylpiperazin-1-yl)ethanol Chemical compound CC1CNCCN1CCO SDMNEUXIWBRMPK-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000282341 Mustela putorius furo Species 0.000 description 1
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- JIUIIWVYHWSFAZ-UHFFFAOYSA-N ac1o0v2m Chemical compound O.O.O.O.O JIUIIWVYHWSFAZ-UHFFFAOYSA-N 0.000 description 1
- DPRMFUAMSRXGDE-UHFFFAOYSA-N ac1o530g Chemical compound NCCN.NCCN DPRMFUAMSRXGDE-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910001583 allophane Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- LPCWKMYWISGVSK-UHFFFAOYSA-N bicyclo[3.2.1]octane Chemical compound C1C2CCC1CCC2 LPCWKMYWISGVSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000003841 chloride salts Chemical class 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
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001103 continuous-wave nuclear magnetic resonance spectrum Methods 0.000 description 1
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical group C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
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- 238000001704 evaporation Methods 0.000 description 1
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- 238000010304 firing Methods 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 239000010931 gold Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229940078552 o-xylene Drugs 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
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- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
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- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000012970 tertiary amine catalyst Substances 0.000 description 1
- YMBCJWGVCUEGHA-UHFFFAOYSA-M tetraethylammonium chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC YMBCJWGVCUEGHA-UHFFFAOYSA-M 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- PTMFUWGXPRYYMC-UHFFFAOYSA-N triethylazanium;formate Chemical compound OC=O.CCN(CC)CC PTMFUWGXPRYYMC-UHFFFAOYSA-N 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
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- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/7007—Zeolite Beta
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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Abstract
【解決手段】SiO2/Al2O3モル比が20以上30未満であり、結晶子径が水熱耐久処理前で20nm以上、水熱耐久処理前後の結晶子の変化が10%未満であり、なおかつフッ素の含有量が0.1%未満のβ型ゼオライトを用いる。当該β型ゼオライトは炭素数5以上の2級及び/又は3級アルキルアミンを含んでなる反応液から結晶化することができる。
【選択図】図2
Description
β2 2=βM 2−βO 2
β1=β2×π/180
K:定数(0.9)
λ:X線の波長(0.15418nm)
θ:回折角の1/2
β1:装置補正後の(302)結晶面ピークの半値幅(rad)
β2:装置補正後の(302)結晶面ピークの半値幅(°)
βM:(302)結晶面ピークの半値幅実測値(°)
βO:標準物質であるSiO2から求めた装置補正値(°)
なお半値幅は、2θ=22.4°付近のピークをvoigt関数で近似して波形分離し、更にKα1とKα2の分離を行った後の、Kα1ピークから作図によって求めることができる(FWHM)。
={1−(水熱耐久後の結晶子径/水熱耐久前の結晶子径)}×100・・・(2)
本発明のβ型ゼオライトはフッ素の含有量の少ないものが好ましく、特に0.1重量%以下、より好ましくはフッ素を含まないものが好ましい。フッ素を含む場合にも水熱耐久処理による結晶子径の変化が小さい場合があるが、その原因は定かではないが、SCR触媒として用いた場合に低温活性に劣る場合がある。
Si(nAl):酸素を介して結合しているAlの数がn個のSi
本発明のβ型ゼオライトでは、Si(1Al)のピーク(即ち酸素を介して結合したAlを有し固体酸として働くSi)は−95〜−105ppm付近に、Si(0Al)のピーク(即ち酸素を介して結合したAlを持たず固体酸としては働かないSi)は−105〜−120ppm付近に観察され、この2ピークから骨格SiO2/Al2O3モル比が求められる。n=2〜4のピークは観察されない。
アルカリ/SiO2モル比 0〜1
H2O/SiO2モル比 7〜15
SDA/SiO2モル比 0.05〜0.3
(炭素数5以上の2級/3級アルキルアミン)/SiO2モル比 0.01〜1.0
ここで本発明のβ型ゼオライトを製造するために従来と異なる点は、炭素数5以上の2級及び/又は3級アルキルアミンを用いることである。
<水熱耐久処理条件>
温度:700℃
時間:20時間
ガス中水分濃度:10容量%
ガス流量/ゼオライト容量比:100倍/分
<X線回折装置の測定条件>
装置:マックサイエンス社製MXP3VII
X線源:CuKα=1.5405オングストローム
加速電圧:40kV
管電流:30mA
走査速度:2θ=0.02deg/sec
サンプリング間隔:0.02deg
発散スリット:1deg
散乱スリット:1deg
受光スリット:0.3mm
モノクロメータ使用
ゴニオ半径:185mm
<29Si MAS NMRの測定条件>
装置:Varian NMRS−400
前処理:相対湿度80%にて一晩水和処理
共鳴周波数:79.4MHz
パルス幅:π/6
測定待ち時間:10秒
積算回数:1500回
回転周波数:10.0kHz
シフト標準:TMS
鉄の含有量によってピーク強度に変化が生じることが考えられる。異なる条件での比較を避けるため、29Si MAS NMRの測定においてはFe金属の含有量は2〜3wt%とする。
<SCR触媒のNOx還元評価条件>
処理ガス組成 NO 200ppm
NH3 200ppm
O2 10vol%
H2O 3vol%
残り 窒素バランス
処理ガス流量 1.5リットル/分
処理ガス/触媒容量比 1000/分
テトラエチルオルトシリケート、アルミニウムイソプロポキシド、水酸化テトラエチルアンモニウム(以下TEAOH)水溶液、アミン(ペンタメチルジエチレントリアミン、東ソー株式会社製TOYOCAT−DT)を混合し、室温で撹拌することでエタノールを蒸発させた。水と種晶(東ソー製HSZ930NHA)を加え、反応混合物の組成を、SiO2:0.034Al2O3:0.16TEAOH:0.3アミン:10H2Oとした。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、600℃で2時間焼成し、β型ゼオライトを得た。
無定形シリカ粉末(東ソーシリカ製、製品名ニップシールVM−3)、水酸化アルミニウム、TEAOH水溶液、水酸化ナトリウム水溶液、アミン(ビス(ジメチルアミノエチル)エーテル、東ソー株式会社製TOYOCAT−ET)、水、種晶(東ソー株式会社製β型ゼオライト、製品名HSZ930NHA)を加え、十分に攪拌混合した。反応混合物のモル組成は、SiO2:0.03Al2O3:0.20TEAOH:0.05NaOH:0.3アミン:10H2Oであった。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、550℃で2時間焼成し、β型ゼオライトを得た。
珪酸ソーダ水溶液、硫酸アルミニウム水溶液を混合して粒状無定形アルミノケイ酸塩を得た。該無定形アルミノケイ酸塩、TEAOH水溶液、水酸化ナトリウム水溶液、アミン(テトラエチレンペンタミン)、水、種晶(東ソー株式会社製β型ゼオライト、製品名HSZ930NHA)を加え、十分に攪拌混合した。反応混合物のモル組成は、SiO2:0.03Al2O3:0.20TEAOH:0.05NaOH:0.3アミン:10H2Oであった。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、550℃で2時間焼成し、β型ゼオライトを得た。
珪酸ソーダ水溶液、硫酸アルミニウム水溶液を混合して粒状無定形アルミノケイ酸塩を得た。該無定形アルミノケイ酸塩、TEAOH水溶液、水酸化カリウム水溶液、アミン(トリエチレンテトラミン)、水、種晶(東ソー株式会社製β型ゼオライト、製品名HSZ930NHA)を加え、十分に攪拌混合した。反応混合物のモル組成は、SiO2:0.03Al2O3:0.14TEAOH:0.05KOH:0.3アミン:10H2Oであった。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、550℃で2時間焼成し、β型ゼオライトを得た。
特開2008−81348号の実施例1に従い、珪酸ソーダ水溶液、硫酸アルミニウム水溶液を用い粒状無定型アルミノ珪酸塩を得た。次に反応混合物の組成が、SiO2:0.05Al2O3:0.67TEAF:11H2Oとなるように混合し、さらに当該組成物100部に対して0.36部の種晶(東ソー株式会社製β型ゼオライト:商品名HSZ940NHA)を加え、オートクレーブ中、155℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリーは、洗浄し、110℃で乾燥した。(TEAF:水酸化テトラエチルフルオライド)当該乾燥粉末を、600℃で2時間焼成し、β型ゼオライトを得た。F含有量は0.17%であった。
特開2008−81348号の実施例3に従い、珪酸ソーダ水溶液、硫酸アルミニウム水溶液を用い粒状無定型アルミノ珪酸塩を得た。反応混合物の組成を、SiO2:0.034Al2O3:0.30TEAOH:0.10KOH:9.9H2Oとし、合成温度を150℃、種晶に東ソー製HSZ930NHAを用いた以外は比較例1と同様の処理をした。
特開2008−81348号の実施例5に従い、珪酸ソーダ水溶液、硫酸アルミニウム水溶液を用い粒状無定型アルミノ珪酸塩を得た。反応混合物の組成を、SiO2:0.034Al2O3:0.07TEABr:0.13TEAOH:9.9H2Oとし、合成温度を150℃、種晶に東ソー製HSZ930NHAを用いた以外は比較例1と同様の処理をした(TEABr:臭化テトラエチルアンモニウム)。
特開2008−81348号の実施例7に従い、テトラエチルオルトシリケート、アルミニウムイソプロポキシド、TEAOHを混合し、室温で撹拌することでエタノールを蒸発させた。水と種晶を加え、反応混合物の組成を、SiO2:0.034Al2O3:0.16TEAOH:10H2Oとした。合成温度を150℃、種晶に東ソー製HSZ930NHAを用いた以外は比較例1と同様の処理をした。
テトラエチルオルトシリケート、アルミニウムイソプロポキシド、TEAOH水溶液、アミン(トリエタノールアミン)を混合し、室温で撹拌することでエタノールを蒸発させた。水と種晶(東ソー製HSZ930NHA)を加え、反応混合物の組成を、SiO2:0.034Al2O3:0.16TEAOH:0.3アミン:10H2Oとした。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、600℃で2時間焼成し、β型ゼオライトを得た。
テトラエチルオルトシリケート、アルミニウムイソプロポキシド、TEAOH水溶液、アミン(ジエチレントリアミン)を混合し、室温で撹拌することでエタノールを蒸発させた。水と種晶(東ソー製HSZ930NHA)を加え、反応混合物の組成を、SiO2:0.034Al2O3:0.16TEAOH:0.3アミン:10H2Oとした。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、600℃で2時間焼成し、β型ゼオライトを得た。
米国特許3308069号の実施例6に従い、NaAlO2、水、無定形シリカ粉末(東ソーシリカ製、製品名ニップシールVM−3)、TEAOH水溶液を用い、種晶は用いなかった。反応混合物の組成は、SiO2:0.025Al2O3:0.62TEAOH:0.1NaOH:20H2Oであった。この反応混合物をステンレス製オートクレーブに密閉し、150℃で攪拌しながら加熱して結晶化させた。結晶化後のスラリー状混合物を固液分離し、十分量の純水で洗浄し、110℃で乾燥した。当該乾燥粉末を、600℃で2時間焼成し、β型ゼオライトを得た。
反応混合物の組成を、SiO2:0.02Al2O3:0.62TEAOH:0.1NaOH:20H2Oとした以外は、比較例7と同様の処理をした。
実施例、比較例のβ型ゼオライトそれぞれにFe(NO3)3・9水和物の水溶液を用いてFe金属を3重量%担持し、500℃で空気焼成した。
β型ゼオライトにFe金属を3重量%担持したSCR触媒を水熱耐久処理し、SCR触媒評価を行った。結果を表2に示す。
2:水熱処理後
Claims (9)
- SiO2/Al2O3モル比が20以上30未満であり、水熱耐久処理前の結晶子径が20nm以上、水熱耐久処理前後の結晶子の変化が10%未満であり、且つ、フッ素の含有量が0.1重量%以下であるβ型ゼオライト。
- 29Si MAS NMRによる骨格SiO2/Al2O3モル比(n)が水熱耐久処理前に20以上30未満、なおかつ水熱処理後の骨格SiO2/Al2O3モル比(n’)が耐久前より10を超えない(n’<n+10)ことを特徴とする請求項1に記載のβ型ゼオライト。
- 電子顕微鏡で観察した時の平均粒子径が0.35〜0.50μmである請求項1又は請求項2に記載のβ型ゼオライト。
- 炭素数5以上の2級及び/又は3級アルキルアミンを含んでなる反応液から結晶化する請求項1乃至請求項3のいずれかに記載のβ型ゼオライトの製造方法。
- 請求項1乃至請求項3のいずれかに記載のβ型ゼオライトに周期律表の8〜11族の元素群から選ばれる少なくとも一種の金属を含んでなるSCR触媒。
- 周期律表の8〜11族の元素群から選ばれる少なくとも一種の金属が鉄及び/又は銅を含んでなる請求項5に記載のSCR触媒。
- 金属として鉄を含有し、29Si MAS NMRによる骨格SiO2/Al2O3モル比(m)が水熱耐久処理前に15以上25以下、なおかつ水熱処理後の骨格SiO2/Al2O3モル比(m’)が処理前より10を超える(m’>m+10)ことを特徴とする請求項5又は請求項6に記載のSCR触媒。
- 金属として鉄を含有し、29Si MAS NMRによる骨格SiO2/Al2O3モル比(m)が水熱耐久処理前に15以上25以下、なおかつ水熱処理後の骨格SiO2/Al2O3モル比(m’)が30を超え50以下である請求項7に記載のSCR触媒。
- 水熱耐久処理後の200℃でのNOx還元率が40%以上である請求項5乃至請求項8のいずれかに記載のSCR触媒。
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JP2019104677A (ja) * | 2017-12-14 | 2019-06-27 | 東ソー株式会社 | β型ゼオライト及びその製造方法 |
JP7192463B2 (ja) | 2017-12-14 | 2022-12-20 | 東ソー株式会社 | β型ゼオライト及びその製造方法 |
JP7435709B2 (ja) | 2017-12-14 | 2024-02-21 | 東ソー株式会社 | β型ゼオライト及びその製造方法 |
CN116395708A (zh) * | 2022-01-06 | 2023-07-07 | 沙特阿拉伯石油公司 | 通过水热处理合成介孔纳米尺寸沸石β的方法及其用途 |
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EP2314544A1 (en) | 2011-04-27 |
EP2314544A4 (en) | 2011-11-09 |
US8722560B2 (en) | 2014-05-13 |
CN102123946A (zh) | 2011-07-13 |
US20110136657A1 (en) | 2011-06-09 |
KR20110056490A (ko) | 2011-05-30 |
EP2314544B1 (en) | 2023-06-28 |
WO2010021315A1 (ja) | 2010-02-25 |
JP5549839B2 (ja) | 2014-07-16 |
CN102123946B (zh) | 2013-12-04 |
KR101507204B1 (ko) | 2015-03-30 |
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