Catalyst for purifying exhaust gas

Details Catalyst for purifying exhaust gas Catalyst for purifying exhaust gas

1997-08-28

1999-04-13

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422177, 422172, 422180, 55526, 55DIG30, 60303, B01D 5334

Patent

active

058940138

ABSTRACT:
A catalyst for purifying an exhaust gas includes a substrate, a catalyst carrier layer, a catalyst ingredient and a hydrocarbons supplier. The catalyst carrier layer is formed on the substrate. The catalyst ingredient is loaded on the catalyst carrier layer. The hydrocarbons supplier is disposed in the substrate, and supplies supplementary hydrocarbons into the catalyst carrier layer so as to securely react the supplementary hydrocarbons with NO.sub.x included in an exhaust gas. Hence, the catalyst can purify not only CO but also NO.sub.x over a wide temperature range.

REFERENCES:
patent: 4857089 (1989-08-01), Kitagawa et al.
patent: 5041270 (1991-08-01), Fujitani et al.
patent: 5419878 (1995-05-01), Honma

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