Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1989-03-15
1990-09-18
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
4232135, B01J 2104, B01J 2106, B01J 2310, B01J 2340
Patent
active
049578960
ABSTRACT:
A catalyst for purification of exhaust gases comprising: a support substrate; an active alumina coating layer comprising at least one of nickel oxide and cobalt oxide formed on the surface of the support substrate; a composite oxide comprising cerium oxide and zirconium oxide formed in the active alumina coating layer; and noble metal catalyst ingredients comprising at least one of platinum, palladium and rhodium loaded on the active alumina coating layer. The catalyst offers a decreased hydrogen sulfide H.sub.2 S emission and conversion ratios for hydrocarbon (HC), carbon monoxide (CO), and nitrogen oxides (NOx) equivalent to or superior to those of conventional catalysts.
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SAE Technical Paper Series, "Sulfur Storage and Release Automotive Catalysts", (Authors) M. G. Henke, J. J. White, and G. W. Denison of Allied Signal, Inc. No. 872134 (1987).
Ishikawa Yutaka
Matsumoto Shin-ichi
Matsuura Shinji
Ozawa Masakuni
Shinjoh Hirofumi
Kabushiki Kaisha Toyota Chuo Kenkyusho
Shine W. J.
Toyota Jidosha Kabushiki Kaisha Cataler Industrial Co. Ltd
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