Improved air purification system and method for removing formaldehyde
US-2017291164-A1 · Oct 12, 2017 · US
Exhaust gas purifying catalyst
US9616410B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9616410-B2 |
| Application number | US-201414903419-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 10, 2014 |
| Priority date | Jul 10, 2013 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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- Title
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Abstract
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The object of the present invention is to provide an exhaust gas purifying catalyst, exhibits excellent performance for methane purification. The object can be solved by the exhaust gas purifying catalyst comprising a substrate and a catalyst layer provided on the substrate, in which the catalyst layer comprises at least one member selected from the group consisting of vanadium, niobium and tantalum; and platinum, and/or palladium.
First claim
Opening claim text (preview).
The invention claimed is: 1. An exhaust gas purifying catalyst comprising a substrate and a catalyst layer provided on the substrate, wherein the catalyst layer comprises a lower catalyst layer comprising an upstream catalyst layer and a downstream catalyst layer, the upstream catalyst layer is located on an upstream side of the downstream catalyst layer in terms of the exhaust gas flow direction, the upstream catalyst layer comprises platinum and/or palladium, and the downstream catalyst layer comprises vanadium. 2. The exhaust gas purifying catalyst according to claim 1 , wherein the catalyst layer further comprises an upper catalyst layer provided on the lower catalyst layer, and the upper catalyst layer comprises rhodium. 3. The exhaust gas purifying catalyst according to claim 1 , wherein the catalyst layer further comprises rhodium. 4. The exhaust gas purifying catalyst according to claim 2 , wherein the lower catalyst layer is provided on the substrate, and the upper catalyst layer is provided on the lower catalyst layer.
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Classifications
Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths · CPC title
- B01J23/6482Primary
Vanadium · CPC title
Rhodium · CPC title
characterised by a specific catalyst · CPC title
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US9616410B2 cover?
- The object of the present invention is to provide an exhaust gas purifying catalyst, exhibits excellent performance for methane purification. The object can be solved by the exhaust gas purifying catalyst comprising a substrate and a catalyst layer provided on the substrate, in which the catalyst layer comprises at least one member selected from the group consisting of vanadium, niobium and tan…
- Who is the assignee on this patent?
- Cataler Corp
- What technology area does this patent fall under?
- Primary CPC classification B01J23/6482. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 11 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).