Exhaust gas purifying catalyst

Details Exhaust gas purifying catalyst Exhaust gas purifying catalyst

1988-07-08

1990-04-17

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502327, 502439, 4232135, B01J 2104, B01J 2106, B01J 2386

Patent

active

049180428

ABSTRACT:
An exhaust gas purifying catalyst of this invention comprises a heat resistance stainless steel catalyst support, an oxide film containing zirconium oxide formed on the heat resistance stainless steel catalyst support, an activated alumina catalyst carrier layer formed on the oxide film, and at least one metal catalyst loaded in the activated alumina catalyst carrier layer. Thus, the activated alumina catalyst carrier layer's come-off from the catalyst support and the oxidation of the catalyst support are suppressed at the same time, and the conversions of the hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) are also improved.

REFERENCES:
patent: 3920583 (1975-11-01), Pugh
patent: 4096095 (1978-06-01), Cairns
patent: 4233189 (1980-11-01), Gandhi et al.
patent: 4277374 (1981-07-01), Lula et al.
patent: 4318828 (1982-03-01), Chapman
patent: 4367162 (1983-01-01), Fujitani et al.
patent: 4673663 (1987-06-01), Magnier

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