FR2559754A1 - Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention - Google Patents
Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention Download PDFInfo
- Publication number
- FR2559754A1 FR2559754A1 FR8402506A FR8402506A FR2559754A1 FR 2559754 A1 FR2559754 A1 FR 2559754A1 FR 8402506 A FR8402506 A FR 8402506A FR 8402506 A FR8402506 A FR 8402506A FR 2559754 A1 FR2559754 A1 FR 2559754A1
- Authority
- FR
- France
- Prior art keywords
- temperature
- cerium
- process according
- fact
- ceric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title claims description 44
- 229940044927 ceric oxide Drugs 0.000 title claims description 41
- 238000000034 method Methods 0.000 title claims description 39
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 title claims description 38
- 230000000877 morphologic effect Effects 0.000 title description 3
- 238000001354 calcination Methods 0.000 claims abstract description 15
- 239000002244 precipitate Substances 0.000 claims abstract description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 12
- 230000007062 hydrolysis Effects 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 230000002378 acidificating effect Effects 0.000 claims abstract description 4
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 25
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 15
- 229910002651 NO3 Inorganic materials 0.000 claims description 11
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012266 salt solution Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 150000000703 Cerium Chemical class 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000012429 reaction media Substances 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 229960004592 isopropanol Drugs 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 10
- 229910000420 cerium oxide Inorganic materials 0.000 abstract 1
- ITZXULOAYIAYNU-UHFFFAOYSA-N cerium(4+) Chemical class [Ce+4] ITZXULOAYIAYNU-UHFFFAOYSA-N 0.000 abstract 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 3
- -1 nitrate ions Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- XMPZTFVPEKAKFH-UHFFFAOYSA-P ceric ammonium nitrate Chemical compound [NH4+].[NH4+].[Ce+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O XMPZTFVPEKAKFH-UHFFFAOYSA-P 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005169 Debye-Scherrer Methods 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical group OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 1
- DPUCLPLBKVSJIB-UHFFFAOYSA-N cerium;tetrahydrate Chemical compound O.O.O.O.[Ce] DPUCLPLBKVSJIB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000006704 dehydrohalogenation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007324 demetalation reaction Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/276—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/77—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by unit-cell parameters, atom positions or structure diagrams
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
- C01P2006/13—Surface area thermal stability thereof at high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Saccharide Compounds (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Compositions Of Oxide Ceramics (AREA)
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8402506A FR2559754A1 (fr) | 1984-02-20 | 1984-02-20 | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| AT85400216T ATE37856T1 (de) | 1984-02-20 | 1985-02-11 | Ceriumdioxid mit morphologischen kennzeichen und verfahren zu seiner herstellung. |
| EP85400216A EP0153227B1 (fr) | 1984-02-20 | 1985-02-11 | Oxyde cérique à nouvelles caractéristiques morphologiques et son procédé d'obtention |
| DE8585400216T DE3565518D1 (en) | 1984-02-20 | 1985-02-11 | Cerium dioxide with morphological characteristics, and process for its preparation |
| BR8500717A BR8500717A (pt) | 1984-02-20 | 1985-02-15 | Oxido cerico e processo de obtencao |
| NO850630A NO165753C (no) | 1984-02-20 | 1985-02-18 | Ceriumoksyd og fremgangsmaate for dets fremstilling. |
| DK75285A DK75285A (da) | 1984-02-20 | 1985-02-19 | Ceriumoxid med saerlige morfologiske karakteristika samt fremgangsmaade til fremstilling deraf |
| AU38949/85A AU571650B2 (en) | 1984-02-20 | 1985-02-19 | Ceric oxide and a process for its production |
| CA000474661A CA1257071A (fr) | 1984-02-20 | 1985-02-19 | Procede d'obtention d'oxyde cerique et oxyde cerique a caracteristiques morphologiques |
| FI850672A FI76057C (fi) | 1984-02-20 | 1985-02-19 | Foerfarande foer framstaellning av ceriumoxid med en specifik yta av minst 85 + 5 m2/g och ceriumoxid. |
| JP60030685A JPS60239323A (ja) | 1984-02-20 | 1985-02-20 | 新規な形態的特徴を持つ酸化第二セリウム及びその製造方法 |
| US06/703,558 US4663137A (en) | 1984-02-20 | 1985-02-20 | Process for producing cerium oxide particulates |
| KR1019850001076A KR910010126B1 (ko) | 1984-02-20 | 1985-02-21 | 새로운 형태학적인 특성을 갖는 산화세륨 및 이의 제조방법 |
| US07/459,361 US5017352A (en) | 1984-02-20 | 1989-12-29 | Novel cerium oxide particulates |
| JP4206990A JPH0660015B2 (ja) | 1984-02-20 | 1992-07-13 | 新規な形態的特徴を持つ酸化第二セリウムの製造方法 |
| JP7240457A JP2655138B2 (ja) | 1984-02-20 | 1995-08-28 | 新規な形態的特徴を有する酸化第二セリウム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8402506A FR2559754A1 (fr) | 1984-02-20 | 1984-02-20 | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2559754A1 true FR2559754A1 (fr) | 1985-08-23 |
Family
ID=9301172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8402506A Pending FR2559754A1 (fr) | 1984-02-20 | 1984-02-20 | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
Country Status (13)
| Country | Link |
|---|---|
| US (2) | US4663137A (https=) |
| EP (1) | EP0153227B1 (https=) |
| JP (3) | JPS60239323A (https=) |
| KR (1) | KR910010126B1 (https=) |
| AT (1) | ATE37856T1 (https=) |
| AU (1) | AU571650B2 (https=) |
| BR (1) | BR8500717A (https=) |
| CA (1) | CA1257071A (https=) |
| DE (1) | DE3565518D1 (https=) |
| DK (1) | DK75285A (https=) |
| FI (1) | FI76057C (https=) |
| FR (1) | FR2559754A1 (https=) |
| NO (1) | NO165753C (https=) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2559755A1 (fr) * | 1984-02-20 | 1985-08-23 | Rhone Poulenc Spec Chim | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| FR2559754A1 (fr) * | 1984-02-20 | 1985-08-23 | Rhone Poulenc Spec Chim | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| FR2583736B1 (fr) * | 1985-06-20 | 1987-08-14 | Rhone Poulenc Spec Chim | Nouveau compose de cerium iv et son procede de preparation. |
| FR2584388B1 (fr) * | 1985-07-03 | 1991-02-15 | Rhone Poulenc Spec Chim | Composition a base d'oxyde cerique, sa preparation et ses utilisations |
| FR2593195B1 (fr) * | 1986-01-22 | 1988-08-12 | Centre Nat Rech Scient | Nouvelles compositions particulaires d'oxyde de terre rare, leur preparation et leur application |
| FR2596380B1 (fr) * | 1986-03-26 | 1991-09-27 | Rhone Poulenc Chimie | Nouveau compose de cerium iv et son procede de preparation |
| FR2596381B1 (fr) * | 1986-03-26 | 1988-05-27 | Rhone Poulenc Chimie | Oxydes ceriques a nouvelles caracteristiques morphologiques et leur procede d'obtention |
| FR2608583B1 (fr) * | 1986-12-19 | 1990-12-07 | Rhone Poulenc Chimie | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
| US4839146A (en) * | 1987-04-15 | 1989-06-13 | General Motors Corporation | Catalyst for simultaneous NO decomposition and CO oxidation under cycled operating conditions |
| FR2616769B1 (fr) * | 1987-06-17 | 1990-11-30 | Rhone Poulenc Chimie | Procede d'obtention d'un oxyde de terre rare et produit obtenu |
| FR2617153B1 (fr) * | 1987-06-26 | 1991-04-05 | Rhone Poulenc Chimie | Procede d'obtention d'un oxyde cerique et oxyde cerique a nouvelles caracteristiques morphologiques |
| US5174984A (en) * | 1987-06-29 | 1992-12-29 | Rhone-Poulenc Chimie | Ceric oxide with new morphological characteristics and method for obtaining same |
| FR2632945B1 (fr) * | 1988-06-15 | 1991-02-08 | Rhone Poulenc Chimie | Procede d'obtention d'un oxyde cerique de grande surface specifique |
| EP0300853B1 (fr) * | 1987-06-29 | 1991-09-18 | Rhone-Poulenc Chimie | Procédé d'obtention d'un oxyde cérique |
| FR2617154B1 (fr) * | 1987-06-29 | 1990-11-30 | Rhone Poulenc Chimie | Procede d'obtention d'oxyde cerique et oxyde cerique a nouvelles caracteristiques morphologiques |
| FR2640954B1 (https=) * | 1988-12-23 | 1991-03-29 | Rhone Poulenc Chimie | |
| US5279789A (en) * | 1988-12-23 | 1994-01-18 | Rhone-Poulenc Chimie | Ceric oxide particulates having improved morphology |
| DE3902913A1 (de) * | 1989-02-01 | 1990-08-09 | Degussa | Traegermaterial fuer platingruppenmetall-haltige dreiweg-katalysatoren mit verringerter neigung zur h(pfeil abwaerts)2(pfeil abwaerts)s-emission |
| US5063193A (en) * | 1990-06-06 | 1991-11-05 | General Motors Corporation | Base metal automotive exhaust catalysts with improved activity and stability and method of making the catalysts |
| FR2684662B1 (fr) * | 1991-12-09 | 1994-05-06 | Rhone Poulenc Chimie | Composition a base d'oxyde cerique, preparation et utilisation. |
| FR2698346B1 (fr) * | 1992-11-25 | 1995-01-27 | Rhone Poulenc Chimie | Agrégat de cristallites d'oxyde cérique, procédé d'obtention et son utilisation pour réduire les résidus de combustion. |
| JP2746861B2 (ja) * | 1995-11-20 | 1998-05-06 | 三井金属鉱業株式会社 | 酸化セリウム超微粒子の製造方法 |
| WO1997029510A1 (fr) * | 1996-02-07 | 1997-08-14 | Hitachi Chemical Company, Ltd. | Abrasif d'oxyde de cerium, microplaquette semi-conductrice, dispositif semi-conducteur, procede pour les produire et procede pour polir les substrats |
| RU2162821C2 (ru) * | 1999-05-05 | 2001-02-10 | Всероссийский научно-исследовательский институт химической технологии | Способ выделения церия (+4) из азотнокислого раствора редкоземельных элементов |
| TW528796B (en) | 2000-12-13 | 2003-04-21 | Mitsui Mining & Amp Smelting C | Cerium-based abrasive and method of evaluating the same |
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| FR859854A (fr) * | 1938-09-06 | 1940-12-31 | Produits Chim Terres Rares Soc | Procédé d'obtention de bioxyde de cérium |
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| SU833525A1 (ru) * | 1979-07-27 | 1981-05-30 | Институт Общей И Неорганической Химии Анбелорусской Ccp | Способ получени двуокиси цери |
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| FR2472601A1 (fr) * | 1979-12-27 | 1981-07-03 | Rhone Poulenc Ind | Procede de fabrication de compositions de polissage a base de cerium |
| DE3005137A1 (de) * | 1980-02-12 | 1981-08-20 | Degussa Ag, 6000 Frankfurt | Cerhaltige faellungskieselsaeure, verfahren zu deren herstellung, sowie zu elastomeren haertbare massen, die die cerhaltige faellungskieselsaeure enthalten |
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| DE3271142D1 (en) * | 1981-08-07 | 1986-06-19 | Atomic Energy Authority Uk | Cerium compounds |
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| FR2559754A1 (fr) * | 1984-02-20 | 1985-08-23 | Rhone Poulenc Spec Chim | Oxyde cerique a nouvelles caracteristiques morphologiques et son procede d'obtention |
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- 1984-02-20 FR FR8402506A patent/FR2559754A1/fr active Pending
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1985
- 1985-02-11 DE DE8585400216T patent/DE3565518D1/de not_active Expired
- 1985-02-11 AT AT85400216T patent/ATE37856T1/de not_active IP Right Cessation
- 1985-02-11 EP EP85400216A patent/EP0153227B1/fr not_active Expired
- 1985-02-15 BR BR8500717A patent/BR8500717A/pt not_active IP Right Cessation
- 1985-02-18 NO NO850630A patent/NO165753C/no not_active IP Right Cessation
- 1985-02-19 AU AU38949/85A patent/AU571650B2/en not_active Ceased
- 1985-02-19 CA CA000474661A patent/CA1257071A/fr not_active Expired
- 1985-02-19 FI FI850672A patent/FI76057C/fi not_active IP Right Cessation
- 1985-02-19 DK DK75285A patent/DK75285A/da not_active Application Discontinuation
- 1985-02-20 US US06/703,558 patent/US4663137A/en not_active Expired - Lifetime
- 1985-02-20 JP JP60030685A patent/JPS60239323A/ja active Granted
- 1985-02-21 KR KR1019850001076A patent/KR910010126B1/ko not_active Expired
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1989
- 1989-12-29 US US07/459,361 patent/US5017352A/en not_active Expired - Lifetime
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1992
- 1992-07-13 JP JP4206990A patent/JPH0660015B2/ja not_active Expired - Fee Related
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1995
- 1995-08-28 JP JP7240457A patent/JP2655138B2/ja not_active Expired - Fee Related
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| US2327992A (en) * | 1938-04-13 | 1943-08-31 | Blumenfeld Joseph | Process for the preparation of compounds of cerium |
| FR859854A (fr) * | 1938-09-06 | 1940-12-31 | Produits Chim Terres Rares Soc | Procédé d'obtention de bioxyde de cérium |
| SU833525A1 (ru) * | 1979-07-27 | 1981-05-30 | Институт Общей И Неорганической Химии Анбелорусской Ccp | Способ получени двуокиси цери |
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Also Published As
| Publication number | Publication date |
|---|---|
| AU571650B2 (en) | 1988-04-21 |
| FI76057C (fi) | 1988-09-09 |
| EP0153227B1 (fr) | 1988-10-12 |
| AU3894985A (en) | 1985-08-29 |
| KR910010126B1 (ko) | 1991-12-17 |
| US5017352A (en) | 1991-05-21 |
| DK75285A (da) | 1985-08-21 |
| JPH0672711A (ja) | 1994-03-15 |
| BR8500717A (pt) | 1985-10-08 |
| NO850630L (no) | 1985-08-21 |
| JPS60239323A (ja) | 1985-11-28 |
| JP2655138B2 (ja) | 1997-09-17 |
| JPH0660015B2 (ja) | 1994-08-10 |
| ATE37856T1 (de) | 1988-10-15 |
| FI850672L (fi) | 1985-08-21 |
| JPH08310812A (ja) | 1996-11-26 |
| JPH0324478B2 (https=) | 1991-04-03 |
| DE3565518D1 (en) | 1988-11-17 |
| FI850672A0 (fi) | 1985-02-19 |
| KR850007049A (ko) | 1985-10-30 |
| EP0153227A1 (fr) | 1985-08-28 |
| FI76057B (fi) | 1988-05-31 |
| DK75285D0 (da) | 1985-02-19 |
| NO165753C (no) | 1991-04-10 |
| NO165753B (no) | 1990-12-27 |
| CA1257071A (fr) | 1989-07-11 |
| US4663137A (en) | 1987-05-05 |
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