Application of plasma spraying in the preparation of metal-supported catalysts

Catalysts supported on metals are widely used today, but room still remains for further improvement of catalyst characteristics. The subject of this p aper is the application of a plasma spray for the deposition of alumina coa tings on metal substrates of different geometry (plates, foams) for subsequ ent synthesis of catalysts. The alumina layer sprayed successfully solves t wo different problems: (i) it serves as a washcoat on which a catalyst is s ynthesized, and (ii) it protects the metal surface from oxidation at high t emperatures. (C) 1999 Elsevier Science B.V. All rights reserved.