WO2001094262A1 - Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine - Google Patents
Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine Download PDFInfo
- Publication number
- WO2001094262A1 WO2001094262A1 PCT/FR2001/001706 FR0101706W WO0194262A1 WO 2001094262 A1 WO2001094262 A1 WO 2001094262A1 FR 0101706 W FR0101706 W FR 0101706W WO 0194262 A1 WO0194262 A1 WO 0194262A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dispersion
- cerium
- amino acid
- acid
- water
- Prior art date
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- 150000001413 amino acids Chemical class 0.000 title claims abstract description 40
- 238000001246 colloidal dispersion Methods 0.000 title claims abstract description 32
- 150000001785 cerium compounds Chemical class 0.000 title claims abstract description 18
- 229910052723 transition metal Inorganic materials 0.000 title description 2
- 150000003624 transition metals Chemical class 0.000 title description 2
- 239000006185 dispersion Substances 0.000 claims abstract description 121
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 66
- 239000002245 particle Substances 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 4
- 239000010941 cobalt Substances 0.000 claims abstract description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 239000002537 cosmetic Substances 0.000 claims abstract description 4
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 4
- 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 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 238000005461 lubrication Methods 0.000 claims abstract description 3
- 229920006254 polymer film Polymers 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims abstract description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 31
- 239000002244 precipitate Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 16
- 238000000108 ultra-filtration Methods 0.000 claims description 16
- 150000003839 salts Chemical class 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 238000005119 centrifugation Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000003204 osmotic effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical class [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- YPFNIPKMNMDDDB-UHFFFAOYSA-K 2-[2-[bis(carboxylatomethyl)amino]ethyl-(2-hydroxyethyl)amino]acetate;iron(3+) Chemical compound [Fe+3].OCCN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O YPFNIPKMNMDDDB-UHFFFAOYSA-K 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 239000011877 solvent mixture Substances 0.000 claims 1
- 239000004411 aluminium Substances 0.000 abstract 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 239000002689 soil Substances 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 238000011282 treatment Methods 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 229910002651 NO3 Inorganic materials 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 7
- -1 aliphatic amino acid Chemical class 0.000 description 7
- 229960002684 aminocaproic acid Drugs 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 125000000129 anionic group Chemical group 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 239000012429 reaction media Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 150000000703 Cerium Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- HXDLWJWIAHWIKI-UHFFFAOYSA-N 2-hydroxyethyl acetate Chemical class CC(=O)OCCO HXDLWJWIAHWIKI-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 229920002307 Dextran Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 150000001412 amines Chemical group 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 229920001429 chelating resin Polymers 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005199 ultracentrifugation Methods 0.000 description 2
- PQKKNAVPPPHLAY-UHFFFAOYSA-H C(C)(=O)[O-].[Al+3].[Ce+3].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-] Chemical class C(C)(=O)[O-].[Al+3].[Ce+3].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-] PQKKNAVPPPHLAY-UHFFFAOYSA-H 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- DRVWBEJJZZTIGJ-UHFFFAOYSA-N cerium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Ce+3].[Ce+3] DRVWBEJJZZTIGJ-UHFFFAOYSA-N 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000002173 high-resolution transmission electron microscopy Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000831 ionic polymer Polymers 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002603 lanthanum Chemical class 0.000 description 1
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003791 organic solvent mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000012306 spectroscopic technique Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0004—Preparation of sols
- B01J13/0034—Additives, e.g. in view of promoting stabilisation or peptisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/229—Lanthanum oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
- C01G1/02—Oxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/6325—Organic additives based on organo-metallic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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Definitions
- the present invention relates to a colloidal dispersion of a cerium compound or a cerium compound and at least one other element chosen from rare earths and transition metals and comprising an amino acid.
- Cerium soils especially tetravalent cerium soils, are well known. Furthermore, cerium soils in combination with another element can be of great interest, for example for cosmetic applications, such as anti-UV, optics or in the field of phosphors.
- the colloidal dispersion according to the invention is a dispersion of a cerium compound or a cerium compound and at least one other element M chosen from titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, aluminum, gallium, zirconium and rare earths other than cerium, and it is characterized in that it comprises an amino acid, this acid being at least partly linked to the constituent particles of the dispersion.
- colloidal dispersion or sol of a cerium compound, or of a cerium compound and of another abovementioned element designates any system made up of fine solid particles of colloidal dimensions based on d oxide and / or hydrated oxide (hydroxide) of cerium and the other element, in suspension in a liquid phase, said species possibly also containing, possibly, residual quantities of bound or adsorbed ions such as for example acetates, citrates, nitrates, chlorides or ammoniums.
- the percentage of these ions bound X or possibly X + Y in the case of two ions, expressed in molar ratio X / Ce or (X + Y) / Ce can vary for example between 0.01 and 1.5, more particularly between 0,01 and 1. It will be noted that in such dispersions, the cerium and the other element can be either completely in the form of colloids, or simultaneously in the form of ions or polyions and in the form of colloids.
- rare earth is meant the elements of the group constituted by Pyttrium and the elements of the periodic classification of atomic number included inclusively between 57 and 71.
- the main characteristic of the dispersion of the invention is that it comprises an amino acid linked at least in part to the colloidal particles.
- bound is meant that there is a bond between the amino acid and the particles.
- This connection can be of different types. It may firstly be a bond by chemical complexation between the acid group of the amino acid in ionized form and a cation present at the surface of the colloidal particle. This connection can also be of electrostatic nature between the ionized COO " pattern of the amino acid and the surface of the colloidal particle of positive charge. Finally, this connection can be made by adsorption between the amino acid and the surface of the particle.
- bonds can also be demonstrated by different techniques, for example by determination of adsorption curves according to techniques known to those skilled in the art; chemical analyzes of supernatants of centrifugation or ultracentrifugation or by spectroscopic techniques of the Raman or infrared type on colloids separated from their liquid phase by ultracentrifugation.
- the NH 2 function of the acid is free and thus constitutes a protonizable function improving the colloidal stability of the dispers ion or again, this function, as such, may exhibit chemical reactivity for further processing.
- the amino acid is present in the dispersion as much as possible in the form bound to the particles which has just been described.
- at least 50 mol% and even more preferably at least 75 mol% of the amino acid must be present in bound form.
- the amino acid may more particularly be an aliphatic amino acid. It can in particular be a C 4 -C 10 acid and preferably a C - C 8 acid. It will be noted that the longer the acid chain, the more hydrophobic the colloidal particles which can adversely affect the stability of the dispersion in the case of aqueous dispersions.
- the total amino acid content in the dispersion is generally between 0.1 and 1 mole of amino acid per 1 mole of cerium.
- the dispersion can optionally contain cerium in the oxidation state III.
- the level of cerium III is generally at most 50%. It is expressed here and for the whole description by the atomic ratio Ce III / Ce total.
- the level of cerium III can more particularly be at most 35%, in particular in the case of a dispersion of cerium and another element M, and very particularly at most 10%. Furthermore, it is preferably at least 0.5%. This rate can more particularly be at least 1% and even more particularly at least 1.5%.
- the dispersion also contains in this case cerium in the form of cerium IV. The invention also applies of course to the case where all the cerium is present in form IV.
- the amount of this element is generally at most 50%, preferably at most 20%, this amount being expressed by the ratio moles of element M / sum of moles of element M and cerium.
- Element M can be present in different oxidation states. The invention obviously applies to dispersions containing several elements M.
- the dispersions of the invention have a pH value which can vary over a wide range, especially in the high pH range. They may for example have a pH value of between 4 and 8.5. These pH values, close to neutrality, allow interesting applications of the dispersions of the invention.
- the dispersions of the invention are particularly pure in nitrate anions. More specifically, the content of nitrates anions in the dispersions of this variant, measured by the content of nitrates anions by weight of the colloidal particles is less than 80ppm.
- the dispersions of the invention can also be pure as regards their content of chloride ions.
- the dispersion of the invention can have a concentration of at least 50 g / l.
- This concentration is expressed as oxide and taking into account the sum of cerium oxides and, where appropriate, the other or others of the foregoing.
- This concentration can more particularly be at least 80 g / l.
- the sizes of the colloidal particles which constitute the soils of the invention are also liable to vary over a wide range.
- the particles can have an average diameter of between 2 and 80 nm, more particularly between 3 and 50 nm. This diameter is determined by photometric counting from an analysis by METHR (High Resolution Transmission Electron Microscopy).
- the dispersions according to the invention can be aqueous dispersions, the continuous phase being water, or dispersions in a continuous phase which can be constituted by a water / organic solvent mixture miscible with water or alternatively dispersions in an organic solvent miscible with water.
- solvents that may be mentioned are alcohols such as methanol or ethanol, glycols such as ethylene glycol, acetate derivatives of glycols such as ethylene glycol monoacetate, glycol ethers, polyols or ketones.
- This process essentially consists in adding an amino acid to a starting colloidal dispersion of a cerium compound or a cerium compound and at least one other element M mentioned above.
- the amino acid can be added in solid form or in solution.
- the amount of amino acid added is adjusted according to the size of the colloidal particles and therefore their specific surface. The larger this area, the greater the amount of amino acid to be added to have a high level of acid in bound form.
- an amount of 2 to 8 will be targeted, more particularly from 2 to 5 amino acid molecules per nm 2 of surface of colloidal particles.
- any suitable colloidal dispersion can be used as the starting dispersion. Mention may thus be made, as suitable dispersions, of those described or obtained by the methods described in patent applications EP-A-206906, EP-A-208580, EP-A-208581, EP-A-239477 and EP-A-700870. It is possible to use very particularly the colloidal dispersions obtained by thermohydrolysis of an aqueous solution of a cerium IV salt such as a nitrate, in an acid medium in particular. Such a process is described in European patent applications EP-A-239477 or EP-A-208580.
- This process for the preparation of dispersions based on cerium and on an element M comprises a first step in which a mixture of at least one salt of cerium with at least one salt of an element M is reacted with a base.
- dispersions containing cerium III it is possible in particular to start from a cerium III salt or from a mixture comprising a cerium IV salt in addition to the cerium III salt.
- cerium III salts it is possible to use more particularly cerium III acetate, chloride or nitrate as well as mixtures of these salts such as mixed acetate / chloride.
- cerium IV cerium IV nitrate can be used and for the other elements chlorides and nitrates in particular. Salts of the same type can be used for the other element or elements M.
- products of the hydroxide type can be used in particular.
- the reaction of the cerium salt with the base takes place in the presence of an acid.
- acids which can be used there may be mentioned the mineral acids and more particularly those corresponding to the cerium salts, in particular of cerium III, used in the reaction. Mention may in particular be made of acetic acid, nitric acid or hydrochloric acid. It should be noted that the acid can also be provided by the solution of a salt in which it is incorporated. For example, an acidic titanium chloride solution such as TiOCI 2 , 2HCI can be used as the starting solution.
- the amount of acid present or used during the reaction is such that the atomic ratio H7 (Ce + M) is greater than 0.1, preferably 0.25.
- the reaction of the base with the salts can be carried out continuously, by this is meant a simultaneous addition of the reactants to the reaction medium.
- the pH of the reaction medium is usually between 7.5 and 9.5. It is possible to work under conditions such that the pH of the reaction medium is kept constant during the reaction.
- a precipitate is obtained at the end of the above-mentioned reaction. This precipitate can be separated from the liquid medium by any known method, for example by centrifugation. The precipitate thus obtained can then be resuspended in water so as to give the dispersion of the invention.
- the concentration of cerium in the dispersion thus obtained is generally between 0.005M and 2M, preferably between 0.05M and 0.25M.
- the precipitate resulting from the reaction can be washed.
- This washing can be done by putting the precipitate back into water and then, after stirring, by separating the solid from the liquid medium by centrifugation for example. This can be repeated several times if necessary.
- the dispersion obtained after resuspension in water can be purified and / or concentrated by ultrafiltration.
- Washing and ultrafiltration can be carried out in air or in an atmosphere of air and nitrogen or even under nitrogen.
- the atmosphere under which these operations take place plays a role in the transformation of cerium III into cerium IV.
- This oxidizing treatment can be done in two ways for example.
- a first way is to keep the dispersion under stirring and in air, and this for a period which can vary from 3 to 20 hours for example.
- the second way is to. add oxygenated water to the dispersion.
- the amount of hydrogen peroxide added is adjusted so as to obtain in the final dispersion the ratio Ce III / Ce total given above.
- This oxidation with addition of hydrogen peroxide is preferably carried out after stirring the dispersion in air for a period greater than 2 hours.
- the duration of the addition of hydrogen peroxide can be between 30 min and 6 hours.
- the process which has just been described above for the preparation of a dispersion of cerium and of another element M can be used in the case of the preparation of a dispersion of cerium alone and in which the cerium can be partly in Ce form III.
- the first step of the process consists in reacting the base with only a cerium III salt and in the presence of an acid. Everything that has been described elsewhere for the process also applies in this case; the amount of acid, measured here by the H + / Ce ratio, verifying the values given above.
- This process makes it possible, both for a starting dispersion of cerium alone and for that of a starting dispersion of cerium and of another element M, to obtain soils having a conductivity of at most 5 mS / cm, which is characteristic of a high purity, and a nitrate content of less than 80 ppm.
- this process involves the formation of a precipitate which is then redispersed in water to give the starting dispersion. It can be noted that it is possible to add the amino acid at the same time as water is added to redisperse the precipitate. This procedure makes it possible to obtain concentrated dispersions directly without going through a concentration step, for example by ultrafiltration.
- anionic resins are used.
- this type of resins of those with a backbone of styrene-divinylbenzene copolymers.
- Use may more particularly be made of those having quaternary ammonium, OH "functional groups.
- anionic resins which can be used are Amberlite IRN 78® or Duolite A 101® resins.
- the resin treatment is carried out in any suitable manner.
- the resins can be brought into direct contact with the colloidal dispersion.
- the quantity of anionic resin to be used is defined by the pH which it is desired to reach.
- One of the advantages of the dispersions of the invention is the possibility of obtaining a dispersion at high pH by treatment with an anionic resin whose duration or number of steps are reduced.
- this dispersion can be prepared from an aqueous dispersion as obtained by the methods described above and by addition of the organic solvent to this dispersion aqueous then distillation to remove the water or treatment with an ultrafiltration membrane for the progressive removal of the water.
- the dispersions of the invention also allow access to redispersible compositions in the form of colloidal dispersions.
- a dispersion according to the invention is subjected to evaporation, centrifugation, ultrafiltration or osmotic compression.
- Osmotic compression is a known method, the principle of which is to balance the chemical potential of water through a membrane.
- a dialysis bag for example made of cellulosic material
- This bag being placed in an aqueous solution whose chemical potential of water is different from that of the aqueous phase of the dispersion.
- This can be done, for example, using an aqueous solution of polyethylene glycol (PEG) or else dextran.
- PEG polyethylene glycol
- dextran dextran
- Evaporation, centrifugation and ultrafiltration can be done using any suitable device.
- the dispersion is dried by stoving at low temperature, preferably at a temperature below 50 ° C, or by using a rotavapor, the drying being moreover preferably carried out on dispersions after purification of the free amino acid. , unbound.
- the treatments which have just been mentioned are carried out alone or in combination and make it possible to pass continuously from a colloidal dispersion to a gel or paste and then to a powder. This paste or powder can optionally be dried.
- a redispersible composition is thus obtained in the form of a colloidal dispersion, which comprises particles based on cerium or cerium and on an element M as defined above and an amino acid at least partly linked to these particles.
- the cerium and the other element can be in the form of oxide and / or hydrated oxide (hydroxide).
- the other characteristics described above in particular with regard to the amino acid and its bond with the particles or with regard to the element M also apply to this composition.
- the composition can be in the form of a gel, a paste or a powder. This composition can be redispersed in a liquid medium and a colloidal dispersion identical to the colloidal dispersion of the invention described above is thus obtained.
- the dispersions of the invention can be used in many applications. Mention may be made of catalysis, especially for automotive post combustion, in which case the dispersions are used in the preparation of catalysts.
- the dispersions can also be used for lubrication, in ceramics, in the manufacture of phosphor compounds or in optics.
- the dispersions can also be used for their anti-UV properties, for example in the preparation of polymer films (of the acrylic or polycarbonate type for example) or of cosmetic compositions in particular in the preparation of anti-UV creams. Finally, they can be used on a substrate as anticorrosion agents.
- a colloidal dispersion of Ce ⁇ 2 with a colloid diameter of 5 nm is obtained by adding 1400 g of demineralized water to 460 g of cerium compound obtained by thermohydrolysis at 100 ° C of a ceric nitrate solution previously preneutralized and according to the method of the type described in Example 1 of patent application EP 208580. The whole is stirred.
- the CeO 2 concentration in the dispersion is 1M.
- a solution A is obtained, obtained by dissolving 39.3 g of 6-aminocaproic acid (i.e. 0.3 moles of amino acid, with a molecular mass of 131.2 g) in demineralized water, made up to 150 cm 3 .
- Solution A is added at room temperature, at a constant flow rate, for one hour, to 1000 ml of the colloidal dispersion of CeO 2 described above, stirred.
- the dispersion is left under agitation for 2 hours.
- 40 g of wet anionic resin, of the Amberlite IRN 78 Prolabo brand are added in forty minutes.
- the product is filtered on a frit under a primary vacuum.
- the pH of the dispersion is 4 and the equivalent concentration of CeO 2 , determined by steaming and calcination of an aliquot, is 0.98 M.
- An aqueous colloidal dispersion of CeO 2 , free of nitrate ions, is prepared as follows.
- the precipitation of the solid is carried out in a continuous assembly comprising:
- the precipitate is separated from the mother liquors by centrifugation at 4500 rpm for 10 min. On an aliquot, by calcination at 1000 ° C., a CeO 2 percentage of the precipitate of 23.4% in CeO 2 oxide is determined.
- the precipitate is dispersed by adding demineralized water to obtain a 0.25M Ce dispersion.
- the mixture is stirred for 15 min. Centrifuge again. Two successive operations are thus carried out.
- 100 ml of the 0.25 M Ce dispersion are diluted to 300 ml with demineralized water. Up to 100 ml are concentrated by ultrafiltration on 3 KD membranes. Three ultrafiltrations are thus carried out so as to obtain a colloidal dispersion having a clear appearance and at 0.12 M of Ce.
- the pH of the dispersion is 3.5.
- the NO 3 content is less than 80 ppm.
- the ratio Ce III / Ce total is 1.9% and the conductivity of the dispersion is 0.9 mS / cm.
- the size of the colloids is 3nm.
- Example 3 An aqueous colloidal dispersion of cerium and lanthanum particles is obtained as follows.
- a solution A is obtained by adding to water, with stirring, 525.6 g of Ce (CH 3 COO) 3 at 49.3% in CeO 2 and making up to 3000 ml.
- a solution B is obtained by adding 135 g of lanthanum acetate at 46.4% in La which is made up to 750 ml.
- a solid residue is separated by centrifugation at 4500 rpm for 10 min. Add solution B to solution A, then pour in 214.8 cc of 17.5 M acetic acid solution.
- Precipitation is then carried out in a continuous assembly comprising: a one-liter reactor equipped with a paddle stirrer, with a base of the water tank, and a control electrode
- the pH of the reaction medium is pH 8.5 for the entire duration of the reaction.
- a precipitate is obtained which is separated by centrifugation at 4500 rpm for 10 minutes, the solid product is redispersed in demineralized water. We recentrifuge again.
- the precipitate is evaluated at 34% as cerium and lanthanum oxide.
- the precipitate is dispersed by adding demineralized water to obtain a 0.15 M dispersion in Ce and La.
- the mixture is stirred for 15 min. Centrifuge again. Two successive operations are thus carried out.
- the dispersion is then stirred under an atmosphere of air overnight.
- 100ml of the 0.15M Ce and La dispersion are diluted to 300ml with water demineralized.
- By ultrafiltration on 3 KD membranes up to 100 ml are concentrated. Three ultrafiltrations are thus carried out so as to obtain a dispersion at 0.08M in CeO 2 and La.
- the pH is 4.1.
- the concentration of nitrate ions in the colloidal dispersion is less than 80 ppm.
- TEM cryometry particles of about 3 to 4 nm size are observed.
- the pH is 4.6. 4 cm 3 of 0.1 M NH 4 OH are added at a constant flow rate over a period of 8 min.
- the pH is 7.
- the dispersion remains stable over a period of at least 1 month.
- Example 4 An aqueous colloidal dispersion of cerium and aluminum particles is obtained as follows.
- the precipitation of the solid is carried out in the continuous assembly described in Example 2.
- a precipitate is obtained which is separated by centrifugation.
- the precipitate is dispersed by adding demineralized water to obtain a 0.25 M Ce and Al dispersion.
- the mixture is stirred for 15 min. Centrifuge again. Two successive operations are thus carried out.
- the cerium III content of the dispersion is 60%.
- the dispersion is then stirred under an atmosphere of air overnight. At the end of this treatment, the cerium III content is 31%.
- 100 ml of the 0.25 M Ce and Al dispersion are diluted to 300 ml with demineralized water. Up to 100 ml are concentrated by ultrafiltration on 3 KD membranes. Three ultrafiltrations are thus carried out so as to obtain a dispersion at 0.68 M in CeO 2 -AIO ⁇ , 5 .
- the pH of the dispersion is 4.2.
- 0.5 g of 6-aminocaproic acid (3.8 millimoles) is added to a first aliquot of 20 cm 3 of dispersion (13.6 millimoles).
- the pH of the dispersion is 4.5.
- An aqueous colloidal dispersion of cerium and titanium particles is obtained in the following manner. 562.8 g of Ce (CH 3 COO) 3 at 49.3% in CeO 2 are added with stirring
- the precipitation of the solid is carried out continuously in the assembly described in Example 1.
- the pH of the reaction medium is 8.5 throughout the duration of the reaction.
- a precipitate is obtained which is separated by centrifugation.
- the precipitate contains 15% of cerium and titanium oxide.
- the precipitate is dispersed by adding demineralized water to obtain a 0.12 M dispersion in Ce and Ti.
- the mixture is stirred for 15 min. Centrifuge again. Two successive operations are thus carried out.
- the cerium III content of the dispersion is 60%.
- the dispersion is then stirred under an atmosphere of air overnight. At the end of this treatment, the cerium III content of the dispersion is 6.5%, the total cerium content is 17.2 g / l.
- 100 ml of the 0.1 M dispersion in Ce and Ti are diluted to 300 ml with demineralized water.
- 3 KD membranes By ultrafiltration on 3 KD membranes, up to 100 ml are concentrated. Three ultrafiltrations are thus carried out so as to obtain a dispersion at 0.34 M in CeO 2 -TiO 2 .
- the pH is 3.8.
- the nitrate concentration of the colloidal dispersion is less than 80 ppm.
- TEM cryometry particles of about 3 to 4 nm size are observed.
- Example 3 The procedure is as in Example 3 until the precipitate evaluated at 34% in cerium and lanthanum oxide is obtained.
- a colloidal dispersion is obtained at pH 6.2.
- the CeO 2 - La concentration is 0.4M.
- the addition of the amino acid simultaneously with the resuspension in water of the precipitate leads to a more concentrated soil than that obtained in the case of Example 3.
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002501783A JP2003535674A (ja) | 2000-06-05 | 2001-06-01 | セリウム化合物又はセリウム並びに希土類及び遷移金属から選択される少なくとも1種のその他の元素の化合物の、アミン酸を含むコロイド分散体 |
CA002411749A CA2411749A1 (fr) | 2000-06-05 | 2001-06-01 | Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine |
AU2001274178A AU2001274178A1 (en) | 2000-06-05 | 2001-06-01 | Colloidal dispersion of a cerium compound or of a cerium compound and at least another element selected among rare earths and transition metals and comprising an amino acid |
EP01940666A EP1301435A1 (fr) | 2000-06-05 | 2001-06-01 | Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/07147 | 2000-06-05 | ||
FR0007147A FR2809637B1 (fr) | 2000-06-05 | 2000-06-05 | Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine |
Publications (1)
Publication Number | Publication Date |
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WO2001094262A1 true WO2001094262A1 (fr) | 2001-12-13 |
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PCT/FR2001/001706 WO2001094262A1 (fr) | 2000-06-05 | 2001-06-01 | Dispersion colloidale d'un compose de cerium ou d'un compose de cerium et d'au moins un autre element choisi parmi les terres rares et des metaux de transition et comprenant un acide amine |
Country Status (9)
Country | Link |
---|---|
US (1) | US20030187077A1 (fr) |
EP (1) | EP1301435A1 (fr) |
JP (1) | JP2003535674A (fr) |
KR (1) | KR20030036214A (fr) |
CN (1) | CN1438970A (fr) |
AU (1) | AU2001274178A1 (fr) |
CA (1) | CA2411749A1 (fr) |
FR (1) | FR2809637B1 (fr) |
WO (1) | WO2001094262A1 (fr) |
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FR2831177A1 (fr) * | 2001-10-22 | 2003-04-25 | Rhodia Elect & Catalysis | Dispersion colloidale et poudre colorees de cerium ou de cerium et de titane, de zirconium, d'aluminium ou d'une terre rare, leur procede de preparation et leur utilisation |
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- 2000-06-05 FR FR0007147A patent/FR2809637B1/fr not_active Expired - Fee Related
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- 2001-06-01 AU AU2001274178A patent/AU2001274178A1/en not_active Abandoned
- 2001-06-01 CN CN01811946A patent/CN1438970A/zh active Pending
- 2001-06-01 KR KR1020027016592A patent/KR20030036214A/ko not_active Application Discontinuation
- 2001-06-01 JP JP2002501783A patent/JP2003535674A/ja active Pending
- 2001-06-01 EP EP01940666A patent/EP1301435A1/fr not_active Withdrawn
- 2001-06-01 US US10/297,264 patent/US20030187077A1/en not_active Abandoned
- 2001-06-01 CA CA002411749A patent/CA2411749A1/fr not_active Abandoned
- 2001-06-01 WO PCT/FR2001/001706 patent/WO2001094262A1/fr not_active Application Discontinuation
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Cited By (14)
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FR2831176A1 (fr) * | 2001-10-22 | 2003-04-25 | Rhodia Elect & Catalysis | Composition pigmentaire a base d'un sulfure de terre rare, d'un colorant et, eventuellement, d'un agent de couplage, son procede de preparation et son utilisation |
FR2831177A1 (fr) * | 2001-10-22 | 2003-04-25 | Rhodia Elect & Catalysis | Dispersion colloidale et poudre colorees de cerium ou de cerium et de titane, de zirconium, d'aluminium ou d'une terre rare, leur procede de preparation et leur utilisation |
FR2833862A1 (fr) * | 2001-12-21 | 2003-06-27 | Rhodia Elect & Catalysis | Dispersion colloidale organique de particules de fer, son procede de preparation et son utilisation comme adjuvant de carburant pour moteurs a combustion interne |
WO2003053560A1 (fr) | 2001-12-21 | 2003-07-03 | Rhodia Electronics And Catalysis | Dispersion colloidale organique de particules de fer, son procede de preparation et son utilisation comme adjuvant de carburant pour moteurs a combustion interne |
CN101653713B (zh) * | 2001-12-21 | 2016-02-03 | 罗地亚管理公司 | 铁粒子的有机胶态分散体及其作为内燃机燃料添加剂的用途 |
US7459484B2 (en) * | 2001-12-21 | 2008-12-02 | Rhodia Electronics And Catalysis | Organic colloidal dispersion of iron particles, method for preparing same and use thereof as fuel additive for internal combustion engines |
WO2007119023A3 (fr) * | 2006-04-13 | 2007-12-06 | Eads Europ Aeronautic Defence | Utilisation d'un materiau nanostructure, comme revetement protecteur de surfaces metalliques |
WO2007119023A2 (fr) * | 2006-04-13 | 2007-10-25 | European Aeronautic Defence And Space Company - Eads France | Utilisation d'un materiau nanostructure, comme revetement protecteur de surfaces metalliques |
FR2899906A1 (fr) * | 2006-04-13 | 2007-10-19 | Eads Ccr Groupement D Interet | Utilisation d'un materiau nanostructure, comme revetement protecteur de surfaces metalliques |
WO2008025753A2 (fr) * | 2006-08-31 | 2008-03-06 | Rhodia Operations | Composition a reductibilite elevee a base d'un oxyde de cerium nanometrique sur un support, procede de preparation et utilisation comme catalyseur |
FR2905371A1 (fr) * | 2006-08-31 | 2008-03-07 | Rhodia Recherches & Tech | Composition a reductibilite elevee a base d'un oxyde de cerium nanometrique sur un support, procede de preparation et utilisation comme catalyseur |
WO2008025753A3 (fr) * | 2006-08-31 | 2008-10-30 | Rhodia Operations | Composition a reductibilite elevee a base d'un oxyde de cerium nanometrique sur un support, procede de preparation et utilisation comme catalyseur |
EP2143776A1 (fr) | 2008-06-25 | 2010-01-13 | Commissariat A L'energie Atomique | Dispersions de particules d'oxydes de terres rares luminescents, vernis comprenant ces particules, leurs procédés de préparation et procédé de marquage de substrats |
US8076653B2 (en) | 2008-06-25 | 2011-12-13 | Commissariat A L'energie Atomique | Dispersions of luminescent rare-earth oxide particles, varnish comprising these particles, their methods of preparation and method for marking substrates |
Also Published As
Publication number | Publication date |
---|---|
FR2809637B1 (fr) | 2003-01-24 |
CN1438970A (zh) | 2003-08-27 |
KR20030036214A (ko) | 2003-05-09 |
EP1301435A1 (fr) | 2003-04-16 |
FR2809637A1 (fr) | 2001-12-07 |
AU2001274178A1 (en) | 2001-12-17 |
JP2003535674A (ja) | 2003-12-02 |
CA2411749A1 (fr) | 2001-12-13 |
US20030187077A1 (en) | 2003-10-02 |
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