KR100870483B1 - 촉매용 캐리어 및 이를 이용한 촉매 - Google Patents
촉매용 캐리어 및 이를 이용한 촉매 Download PDFInfo
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- KR100870483B1 KR100870483B1 KR1020077004034A KR20077004034A KR100870483B1 KR 100870483 B1 KR100870483 B1 KR 100870483B1 KR 1020077004034 A KR1020077004034 A KR 1020077004034A KR 20077004034 A KR20077004034 A KR 20077004034A KR 100870483 B1 KR100870483 B1 KR 100870483B1
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- 239000003054 catalyst Substances 0.000 title claims abstract description 223
- 239000010948 rhodium Substances 0.000 claims abstract description 77
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 75
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 238000000576 coating method Methods 0.000 claims abstract description 42
- 239000002245 particle Substances 0.000 claims abstract description 40
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims description 25
- 229910052779 Neodymium Inorganic materials 0.000 claims description 21
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 13
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 13
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 claims description 11
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 22
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 18
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 14
- 238000006555 catalytic reaction Methods 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 12
- 238000009826 distribution Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000003197 catalytic effect Effects 0.000 description 6
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical compound [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- SJLOMQIUPFZJAN-UHFFFAOYSA-N oxorhodium Chemical compound [Rh]=O SJLOMQIUPFZJAN-UHFFFAOYSA-N 0.000 description 5
- 229910003450 rhodium oxide Inorganic materials 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052727 yttrium Inorganic materials 0.000 description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910052777 Praseodymium Inorganic materials 0.000 description 3
- 229910052773 Promethium Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 3
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
- 229910052689 Holmium Inorganic materials 0.000 description 2
- 229910052772 Samarium Inorganic materials 0.000 description 2
- 229910052771 Terbium Inorganic materials 0.000 description 2
- 229910052775 Thulium Inorganic materials 0.000 description 2
- 229910052769 Ytterbium Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 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 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-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
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 230000010802 Oxidation-Reduction Activity Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009422 growth inhibiting effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- 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
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
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- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
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Abstract
Description
지지체 첨가 원소 및 표면 농축 원소 | 첨가량 (질량%) | 열처리온도 (℃) | 표면농축량(질량%) | Rh 분산도 | |
실시예1 | Nd | 2 | 700 | 1.00 | 19.9 |
실시예2 | Nd | 10 | 700 | 4.95 | 14.2 |
실시예3 | Nd | 2 | 900 | 0.44 | 15.9 |
실시예4 | Nd | 5 | 900 | 1.00 | 19.5 |
실시예5 | Nd | 10 | 900 | 1.60 | 16.6 |
실시예6 | La | 2 | 500 | 2.45 | 14.2 |
실시예7 | La | 5 | 500 | 4.68 | 21.5 |
실시예8 | La | 10 | 700 | 6.24 | 15.3 |
실시예9 | La | 2 | 900 | 2.45 | 15.4 |
실시예10 | La | 5 | 900 | 2.909 | 17.3 |
실시예11 | La | 10 | 900 | 3.12 | 15.1 |
비교예1 | 없음 | 없음 | 없음 | 없음 | 13.8 |
Claims (11)
- 산화물 및 원소 주기율표의 3A족의 원소를 포함하는 지지체와 상기 지지체 표면의 전부 또는 일부를 피복하는 코팅부를 포함하는 촉매용 캐리어와, 상기 촉매용 캐리어 위에 담지되는 로듐 입자를 포함하는 촉매에 있어서,상기 코팅부는 상기 원소 주기율표의 3A족의 원소를 포함하고,상기 코팅부에 포함된 상기 3A족의 원소의 산화물 환산으로의 질량 농도가, 상기 지지체에 포함된 상기 3A족의 원소의 산화물 환산으로의 질량 농도보다 높으며,전부 또는 일부의 상기 로듐 입자가 상기 촉매용 캐리어를 구성하는 상기 코팅부와 접한 상태로 담지되는 것을 특징으로 하는 촉매.
- 제 1 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는, Nd와 La로 이루어진 그룹으로부터 선택된 하나 이상의 종류인 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는 Nd이며, 상기 촉매용 캐리어의 상기 Nd 원소 함유율은 Nd2O3 환산으로 1 내지 5 질량%인 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는 La이며, 상기 촉매용 캐리어의 상기 La 원소 함유율은 La2O3 환산으로 2 내지 6.5 질량%인 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 지지체에 포함된 상기 산화물은, 지르코늄 산화물인 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 지지체는, 결정 입자로 이루어지는 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 지지체는, 지르코늄 산화물 및 란탄 산화물을 포함하는 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 지지체에 포함되는 상기 3A족의 원소는, 상기 지지체에 포함되는 상기 산화물 내에 고용(固溶)되는(dissolved as a solid) 것을 특징으로 하는 촉매.
- 제 1 항 또는 제 2 항에 있어서,상기 지지체에 포함된 상기 3A족의 원소의 함유율은, 상기 3A족의 원소의 산화물 환산으로 1 내지 6 몰%인 것을 특징으로 하는 촉매.
- 삭제
- 제 1 항 또는 제 2 항에 있어서,상기 촉매용 캐리어에 담지되는 로듐 입자의 양은, 상기 촉매용 캐리어 100 질량부에 대하여 0.01 내지 3 질량부인 것을 특징으로 하는 촉매.
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WO2006009327A1 (en) | 2004-07-22 | 2006-01-26 | Toyota Jidosha Kabushiki Kaisha | Inorganic oxide, exhaust gas purifying catalyst carrier, and exhaust gas purifying catalyst |
JP2007301526A (ja) * | 2006-05-15 | 2007-11-22 | Toyota Central Res & Dev Lab Inc | 排ガス浄化用触媒及びその製造方法 |
JP4726714B2 (ja) * | 2006-06-16 | 2011-07-20 | 株式会社豊田中央研究所 | 無機酸化物、及びそれを用いた排ガス浄化用触媒 |
JP4726713B2 (ja) * | 2006-06-16 | 2011-07-20 | 株式会社豊田中央研究所 | 無機酸化物、及びそれを用いた排ガス浄化用触媒 |
JP5099828B2 (ja) * | 2007-10-31 | 2012-12-19 | 株式会社豊田中央研究所 | 無機混合酸化物及びそれを用いた排ガス浄化用触媒 |
CN101952037B (zh) * | 2008-02-21 | 2013-03-27 | 株式会社F.C.C. | 催化剂载体及其生产方法 |
JP5903205B2 (ja) * | 2010-01-04 | 2016-04-13 | 株式会社キャタラー | 排ガス浄化用触媒 |
US8796171B2 (en) * | 2011-01-13 | 2014-08-05 | N.E. Chemcat Corporation | Denitration catalyst composition and method of denitration using same |
US9421528B2 (en) * | 2013-02-25 | 2016-08-23 | Umicore Shokubai Japan Co., Ltd. | Exhaust gas purifying catalyst and exhaust gas purification method using same |
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JPS6186945A (ja) * | 1984-10-02 | 1986-05-02 | Matsushita Electric Ind Co Ltd | 排ガス浄化用触媒体 |
JPH0675676B2 (ja) * | 1986-12-24 | 1994-09-28 | トヨタ自動車株式会社 | 排気ガス浄化用触媒 |
JPH0626672B2 (ja) * | 1987-03-05 | 1994-04-13 | 株式会社豊田中央研究所 | 排気浄化触媒及びその製造方法 |
US4780447A (en) * | 1987-07-10 | 1988-10-25 | W. R. Grace & Co.-Conn. | Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide and method of making the catalysts |
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EP0333037A2 (en) * | 1988-03-12 | 1989-09-20 | Igarashi, Akira c/o Kohgakuin University | Process for steam reforming of hydrocarbon |
US4923842A (en) * | 1988-10-11 | 1990-05-08 | Allied-Signal Inc. | Lanthanum containing catalyst for treating automotive exhaust |
US6294140B1 (en) | 1999-04-23 | 2001-09-25 | Degussa Ag | Layered noble metal-containing exhaust gas catalyst and its preparation |
US20020177628A1 (en) * | 1999-10-18 | 2002-11-28 | Conoco Inc. | Nickel-rhodium based catalysts for synthesis gas production |
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JP2006035018A (ja) | 2006-02-09 |
US20080090722A1 (en) | 2008-04-17 |
CN100548475C (zh) | 2009-10-14 |
JP4794834B2 (ja) | 2011-10-19 |
WO2006009321A1 (en) | 2006-01-26 |
US7842642B2 (en) | 2010-11-30 |
KR20070044460A (ko) | 2007-04-27 |
CN1988953A (zh) | 2007-06-27 |
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