Oxidation catalyst for internal combustion engines

Details Oxidation catalyst for internal combustion engines Oxidation catalyst for internal combustion engines

1998-12-16

2000-06-20

Griffin, Steven P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

502334, 502349, 502500, B01D 5394, B01J 2112, B01J 2314, B01J 2342

Patent

active

060774894

ABSTRACT:
An oxidation catalyst for internal combustion engines which contains platinum on a finely divided support material and containing lead as a promoter. The catalytic activity of the oxidation catalyst can be increased greatly by promoting the catalyst with lead at a molar ratio of lead to platinum of 2:1. The light-off temperatures of the promoted catalyst are well below the corresponding temperatures for a conventional, lead-free catalyst.

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patent: 5049364 (1991-09-01), Yoshimoto et al.
patent: 5128305 (1992-07-01), Yoshimoto et al.
Database WPI, Section Ch, Week 197522, Derwent Publication Ltd., London, GB; XP002125142 & JP 49 093267A Sep. 5 1974.
Database WPI, Section Ch, Week 199321, Derwent Publication Ltd., London, GB; XP002125143 & JP 05 103985A Apr. 27, 1993.
Japan Patent Application Disclosure No. 07-024327, Jan. 27, 1995.

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