The High Surface-Area Washcost Applied in Auto Exhaust Catalytic Converter

摘要

This paper related to automotive emission catalyst and specifically relates to a thermally stable high surface-area washcoat useful for supprting oxidation and/or reduction catalyst at elevated temperature. It is known that catalyst washcoat materials for automotive emission use should possess highs urface area, refractoriness, and thermal stability. High surface-area in the washcoat increases catalyst dispersion which retards activity loss resulting form catalyst agglomeration and sintering, and increase the accessible catalyst surface area.