WO1995000235B1 - Layered catalyst composite - Google Patents
Layered catalyst compositeInfo
- Publication number
- WO1995000235B1 WO1995000235B1 PCT/US1994/007235 US9407235W WO9500235B1 WO 1995000235 B1 WO1995000235 B1 WO 1995000235B1 US 9407235 W US9407235 W US 9407235W WO 9500235 B1 WO9500235 B1 WO 9500235B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- layer
- catalyst composite
- layered catalyst
- metal components
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims abstract 8
- 239000002131 composite material Substances 0.000 title claims abstract 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract 18
- 229910052751 metal Inorganic materials 0.000 claims abstract 9
- 239000002184 metal Substances 0.000 claims abstract 9
- 229910052763 palladium Inorganic materials 0.000 claims abstract 9
- QEFYFXOXNSNQGX-UHFFFAOYSA-N Neodymium Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract 3
- 150000002910 rare earth metals Chemical class 0.000 claims abstract 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract 3
- 229910052726 zirconium Inorganic materials 0.000 claims abstract 3
- 239000001301 oxygen Substances 0.000 claims abstract 2
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitrogen oxide Substances O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 229910052813 nitrogen oxide Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
Abstract
The present invention relates to a layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The structure of the layered catalyst composite of the present invention is designed wherein there is a first layer and a second layer. The first layer comprises a first support; at least one first palladium component and an oxygen storage component in intimate contact with the palladium component; optionally another first platinum group metal component; a zirconium component; at least one first alkaline earth metal components and at least one first rare earth metal component selected from the group consisting of lanthanum metal components and neodymium metal components. The second layer comprises a second support; at least one second palladium component; optionally another second platinum group metal component; at least one second alkaline earth metal component; at least one second rare earth component selected from the group consisting of lanthanum metal components and neodymium metal components and a zirconium component.
Claims
AMENDED CLAIMS
[received by the International Bureau on 12 December 1994 (12.12.94); original claims 44 and 45 amended; remaining claims unchanged (1 page)]
mixtures thereof to at least one of said first and second layers.
43. The layered catalyst composite as recited in claim 1 wherein there is at least 0.003 g/in3 each of the first and second palladium component.
44. The layered catalyst composite as recited in claim 31 wherein there is at least 0.003 g/in3 each of the first and second palladium component.
45. The layered catalyst composite as recited in claim 34 wherein there is at least 0.003 g/in3 each of the first and second.palladium component.
46. A layered catalyst composite comprising a first layer and a second layer: the first layer comprising: a first support; at least one palladium component, wherein the first palladium component is substantially the only platinum group metal component in the first layer; a first oxygen storage component in intimate contact with the first palladium component; optionally a first zirconium component; optionally at least one first alkaline earth metal component; and optionally at least one first rare earth metal component selected from the group consisting of lanthanum metal components and neodymium metal components, wherein the first layer requires at
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94922030A EP0705134B1 (en) | 1993-06-25 | 1994-06-24 | Layered catalyst composite |
| EP98202884A EP0885657B1 (en) | 1993-06-25 | 1994-06-24 | Catalyst composite |
| JP50312595A JP3786954B2 (en) | 1993-06-25 | 1994-06-24 | Layered catalyst composite |
| DE69417889T DE69417889T2 (en) | 1993-06-25 | 1994-06-24 | COMPOSITE LAYER CATALYST |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8314393A | 1993-06-25 | 1993-06-25 | |
| US08/083,143 | 1993-06-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1995000235A1 WO1995000235A1 (en) | 1995-01-05 |
| WO1995000235B1 true WO1995000235B1 (en) | 1995-01-26 |
Family
ID=22176468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/007235 WO1995000235A1 (en) | 1993-06-25 | 1994-06-24 | Layered catalyst composite |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5597771A (en) |
| EP (2) | EP0885657B1 (en) |
| JP (2) | JP3786954B2 (en) |
| KR (1) | KR100431476B1 (en) |
| AT (1) | ATE178809T1 (en) |
| CA (1) | CA2165054A1 (en) |
| DE (2) | DE69417889T2 (en) |
| WO (1) | WO1995000235A1 (en) |
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