Oxidation catalyst for cleaning exhaust gas

Details Oxidation catalyst for cleaning exhaust gas Oxidation catalyst for cleaning exhaust gas

2007-04-04

2009-08-11

Nguyen, Ngoc-Yen M (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S324000, C502S353000, C502S355000

Reexamination Certificate

active

07572751

ABSTRACT:
The present invention provides an oxidation catalyst for cleaning exhaust gas, capable of achieving an excellent catalytic activity at a lower temperature for particulates and high boiling point hydrocarbons in exhaust gas from internal-combustion engines. The oxidation catalyst for cleaning exhaust gas according to the present invention is a composite metal oxide represented by the general formula: LnyMn1-xAxO3, wherein Ln is a metal selected from the group consisting of Sc, Y, Ho, Er, Tm, Yb, and Lu; A is a metal selected from the group consisting of Ti, Nb, Ta, and Ru; 0.005≦x≦0.2; and 0.9≦y≦1. Ln is Y. The composite metal oxide has a hexagonal structure.

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