Importance

Loading Importance Indicators...

Abstract

A production process for supported catalysts is described comprising: (a) preparing a coating suspension containing at least one refractory inorganic oxide and at least some of the elements intended to constitute catalytically active phase (A); (b) filling at least part of the open porosity of a support with this suspension; (c) drying the filled support by centrifuging; (d) a thermal treatment of the support to obtain a support coated by a wash coat; (e) optionally impregnating the coated support with a solution containing the rest of, or elements of, catalytically active phase (A); and (f) thermally activating the catalyst. This preparation process is of particular interest in the production of catalysts for treating exhaust gases of internal combustion engines, where the wash coat deposited on a support comprises in particular a refractory inorganic oxide, iron oxide and cerium oxide and, by way of a catalytically active element, at least one noble metal such as platinum, rhodium or palladium.

Loading the Abstract Image...

First Claim