METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER AND CATALYSED PARTICULATE FILLER

摘要

Method for the preparation of a catalysed particulate fil- ter and a particulate filter. The method comprises the steps of a) providing a catalyst wash coat with a first catalyst ac- tive in burning off of soot and a second catalyst active in selective catalytic reduction of nitrogen oxides; b) coating a particulate filter body with the catalyst wash coat on the dispersion side and the permeate side of the filter body and within partition walls of the filter body; and c) drying and heat treating the coated filter body to ob- tain the catalysed particulate filter.