KR20070044460A - 촉매용 캐리어 및 이를 이용한 촉매 - Google Patents
촉매용 캐리어 및 이를 이용한 촉매 Download PDFInfo
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- KR20070044460A KR20070044460A KR1020077004034A KR20077004034A KR20070044460A KR 20070044460 A KR20070044460 A KR 20070044460A KR 1020077004034 A KR1020077004034 A KR 1020077004034A KR 20077004034 A KR20077004034 A KR 20077004034A KR 20070044460 A KR20070044460 A KR 20070044460A
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- rhodium
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- 239000003054 catalyst Substances 0.000 title claims abstract description 224
- 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
- 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
- 238000006243 chemical reaction Methods 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—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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- 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 주기율표의 3A족의 원소를 포함하는 지지체; 및상기 지지체 표면의 적어도 일부를 피복하는 코팅부를 포함하되,상기 코팅부는 상기 주기율표의 3A족의 원소를 포함하고,상기 코팅부에 포함된 상기 3A족의 원소는, 상기 지지체에 포함된 상기 3A족 원소보다 더 높은 농도를 가지는 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는, Nd와 La로 이루어진 그룹으로부터 선택된 하나 이상의 종류인 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 또는 제 2 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는 Nd이며, 상기 촉매용 캐리어의 상기 Nd 원소 함유율은 Nd2O3에 대하여 1 내지 5 질량%인 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 또는 제 2 항에 있어서,상기 코팅부에 포함된 상기 3A족의 원소는 La이며, 상기 촉매용 캐리어의 La 원소 함유율은 La2O3에 대하여 2 내지 6.5 질량%인 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 지지체에 포함된 상기 산화물은, 지르코늄 산화물인 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,상기 지지체는, 결정 입자로 이루어지는 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,상기 지지체는, 지르코늄 산화물 및 란탄 산화물을 포함하는 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,상기 지지체에 포함되는 상기 원소는, 상기 지지체에 포함되는 상기 산화물 내에 고용(固溶)되는(dissolved as a solid) 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,상기 지지체는, 그 산화물에 대하여 상기 원소의 1 내지 6 몰%를 포함하는 것을 특징으로 하는 촉매용 캐리어.
- 제 1 항 내지 제 9 항 중 어느 한 항의 상기 촉매용 캐리어; 및상기 촉매용 캐리어 상에 담지되는 로듐 입자를 포함하되,상기 로듐 입자의 적어도 일부는, 상기 촉매용 캐리어를 이루는 상기 코팅부와 접한 상태로 담지되는 것을 특징으로 하는 촉매.
- 제 10 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 |
EP0495534A3 (en) * | 1988-03-12 | 1992-10-07 | Akira C/O Kohgakuin University Igarashi | Catalyst for steam reforming of hydrocarbon |
US4923842A (en) * | 1988-10-11 | 1990-05-08 | Allied-Signal Inc. | Lanthanum containing catalyst for treating automotive exhaust |
JP3498453B2 (ja) | 1995-11-27 | 2004-02-16 | 日産自動車株式会社 | 排気ガス浄化用触媒及びその製造方法 |
US6294140B1 (en) * | 1999-04-23 | 2001-09-25 | Degussa Ag | Layered noble metal-containing exhaust gas catalyst and its preparation |
US6409940B1 (en) * | 1999-10-18 | 2002-06-25 | Conoco Inc. | Nickel-rhodium based catalysts and process for preparing synthesis gas |
WO2002020395A2 (en) * | 2000-09-05 | 2002-03-14 | Conoco Inc. | Lanthanide-promoted rhodium catalysts and process for producing synthesis gas |
JP2005254160A (ja) * | 2004-03-12 | 2005-09-22 | Hitachi Ltd | 炭化水素の吸着燃焼方法及びその吸着燃焼機能一体化触媒 |
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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 |
KR100870483B1 (ko) | 2008-11-25 |
CN1988953A (zh) | 2007-06-27 |
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