Improved catalyst for treatment of diesel exhaust.

摘要

A catalyst support is formed from powders of silica, titania and vanadia and a silicate-based clay by applying a wet mixture of said powders to a support substrate, and then drying and calcining said substrate. When impregnated with platinum or palladium, the catalyst support reduces hydrocarbon and particulate emission in diesel exhaust and also prevents formation of mutagens in the exhaust. Advantageously, the catalyst support minimises reaction thereof with sulphur.