Nissan Motor Company Limited

Muneyuki Kubo

Sakae Kawagoshi

Akio Iizuka

Michiichi Taguchi

A catalyst, which has high and long-lasting activity on both the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides particularly when an internal combustion engine is operated at an air-fuel ratio around a stoichiometric ratio, consists of a carrier of active alumina, 0.05-0.2 Wt% platinum, 0.0015-0.045 Wt% rhodium and 0.002-5 Wt% boron.

Catalyst for conversion of engine exhaust gas

A catalytic alloy composed of 60-95% Ni, 2.5-20% Cu and 2.5-20% Co is electrodeposited on a carrier. The plating bath is an aqueous solution of the sulfates of the alloy component metals, containing a complexing agent such as Rochell salt to cause deposition potentials of the metals to fall in a common range.

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Yokosuka, Japan

Muneyuki Kubo