Exhaust gas purifying catalyst and producing method thereof
US8877675B2 · kind B2 · utility
4Cited by
12References
17Claims
0Family size
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Key dates
| Filing date | Jan 9, 2008 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Mar 22, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purifying catalyst includes: a catalyst particle unit having at least noble metal with a catalytic function, first oxides on which the catalyst noble metal is supported, and second oxides covering the first oxides on which the noble metal is supported. In catalyst powder formed of an aggregate of plural pieces of the catalyst particle units, at least one type of compounds selected from the group consisting of a transition element, an alkali earth metal element, an alkali metal element, and a rare earth element, which is a promoter component, are contained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.