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US 9,789,474 B2Granted
Exhaust gas purification catalyst
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKeiichi Minami
Life of this patent
Estimating the term…
Abstract
The problem to be solved by the present invention is to provide a good NOx selective reduction catalyst. To solve the problem is a NOx selective reduction catalyst containing a composite oxide of Ti, Ce, W, and P or S.
Claims2
A NOx selective reduction catalyst, having a core/shell particle structure comprising a core part and a shell part,
- the core part containing copper-supported zeolite;
- and
- the shell part containing a composite oxide of Ti, Ce, W and S.
A NOx selective reduction catalyst, having a core/shell particle structure comprising a core part and a shell part:
- the core part containing copper-supported zeolite;
- and
- the shell part consisting of a composite oxide of Ti, Ce, W, and one selected from P or S.
Dependencies are inferred from the claim text.