Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1988-12-27
1990-05-22
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502304, 4232135, B01J 2106, B01J 2310, B01J 2340, B01J 2374
Patent
active
049277995
ABSTRACT:
A catalyst for the purification of exhaust gases comprising a catalyst carrier layer and catalyst ingredients carried thereon, is capable of enhancing the purification property by suppressing the growth of cerium oxide particles and preventing the formation of LaAlO.sub.3. This catalyst has two composition types. One is a binary composition catalyst comprising oxides of cerium and zirconium in the catalyst carrier layer and the other is a ternary composition catalyst comprising oxides of cerium, zirconium and lanthanum in the catalyst carrier layer.
REFERENCES:
patent: 4587231 (1986-05-01), Sawamura et al.
patent: 4624940 (1986-11-01), Wan et al.
patent: 4702897 (1987-10-01), Onal
Isogai Akio
Kimura Mareo
Matsumoto Shin-ichi
Miyoshi Naoto
Ozawa Masakuni
Kabushiki Kaisha Toyota Chuo Kenkyusho
Shine W. J.
Toyota Jidosha & Kabushiki Kaisha
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