Catalyst for purifying exhaust gases

Details Catalyst for purifying exhaust gases Catalyst for purifying exhaust gases

1996-01-16

1997-11-11

Caldarola, Glenn A.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502339, 502344, 502350, B01J 2358, B01J 2342, B01J 2304, B01J 2344

Patent

active

056863772

ABSTRACT:
A catalyst for purifying exhaust gases comprises a catalyst carrier made of potassium titanate and a noble metal loaded on the catalyst carrier. The catalyst carrier is substantially free from alumina. This catalyst can oxidize at least hydrocarbons in exhaust gases at a high catalytic activity even at low temperatures, and at the same time can suppress SO.sub.2 from converting into sulfates. This catalyst does not employ substance like alumina exhibiting solid acidity as a catalyst carrier. Further, this catalyst can be used for purifying exhaust gases from diesel engines to suppress particulates and sulfates from being emitted, and to improve conversions of hydrocarbons and carbon monoxide.

REFERENCES:
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patent: 4849399 (1989-07-01), Joy, III et al.
patent: 4910180 (1990-03-01), Berndt et al.
Patent Abstracts of Japan, vol. 10, No. 214 (C-362), Jul. 25, 1986, JP-A-61 054238, Mar. 18, 1986.
Patent Abstracts of Japan, vol. 13, No. 179 (C-590), Apr. 26, 1989, JP-A-01 007951, Jan. 11, 1989. 12, 1990. 7, 1990. 13, 1990.

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