AVGASSYSTEM FOER FORDON.

摘要

2-way and 3-way catalyser compositions comprising stannic (IV) oxide (SnO2) and chromium (VI) oxide (CrO3) are described for use in catalytic converters for vehicle exhaust gas systems, which catalytic compositions are effective for catalytic oxidation of carbon monoxide and unburnt hydrocarbons and for catalytic reduction of nitrogen oxides included in the vehicle exhaust gases.