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Exhaust gas purification catalyst and the method for producing the same
US2016279614A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016279614-A1 |
| Application number | US-201615076151-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 21, 2016 |
| Priority date | Mar 27, 2015 |
| Publication date | Sep 29, 2016 |
| Grant date | — |
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Abstract
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The method for producing an exhaust gas purification catalyst according to the present invention includes sputtering a target material containing Nb and Rh to produce fine composite-metal particles containing Nb and Rh.
First claim
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1 . A method for producing an exhaust gas purification catalyst, the method comprising sputtering a target material containing Nb and Rh to produce fine composite-metal particles containing Nb and Rh. 2 . The method according to claim 1 , further comprising supporting the fine composite-metal particles on a powdered support. 3 . The method according to claim 1 , wherein the target material is a micro-mixed target material obtained by mixing Nb powder and Rh powder, and then by molding and sintering the resultant. 4 . An exhaust gas purification catalyst comprising a plurality of fine composite-metal particles containing Nb and Rh. 5 . The exhaust gas purification catalyst according to claim 4 , further comprising a powdered support, wherein the fine composite-metal particles are supported on the powdered support. 6 . The exhaust gas purification catalyst according to claim 5 , wherein the powdered support is a powdered support selected from the group consisting of SiO 2 , ZrO 2 , CeO 2 , Al 2 O 3 , TiO 2 , solid solutions thereof, and combinations thereof. 7 . The exhaust gas purification catalyst according to claim 4 , wherein the average Nb content in the plurality of the fine composite-metal particles is 1 atomic % or more and 30 atomic % or less. 8 . The exhaust gas purification catalyst according to claim 7 , wherein 70% or more of the fine composite-metal particles, based on the number of the particles, have a Nb content in the range of from 40% to 160% of the average Nb content in the plurality of the fine composite-metal particles. 9 . The exhaust gas purification catalyst according to claim 4 , wherein 70% or more of the fine composite-metal particles, based on the number of the particles, have a particle size in the range of from 60% to 140% of the average particle size of the plurality of the fine composite-metal particles. 10 . The exhaust gas purification catalyst according to claim 4 , wherein the exhaust gas purification catalyst is a catalyst for purifying NOx. 11 . A method for purifying exhaust gas, wherein the exhaust gas purification catalyst according to claim 10 is brought into contact with an exhaust gas containing NOx in a lean atmosphere, and thereby reducing NOx, to purify the exhaust gas.
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Nanoparticles · CPC title
Rhodium · CPC title
Auxiliary reduction catalysts · CPC title
of particles · CPC title
Aluminium · CPC title
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- What does patent US2016279614A1 cover?
- The method for producing an exhaust gas purification catalyst according to the present invention includes sputtering a target material containing Nb and Rh to produce fine composite-metal particles containing Nb and Rh.
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01J23/6484. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).