Patent ID: 7550177
Filing Date: 2009-06-23
Classification: B01J,D21C

Abstract:
1. A method of making a manganese dioxide catalyst assembly for use in a reactor employed in paper making to cause generation of polysulfide in white liquor, comprising the steps of: a) providing a layer of a resin tolerant of environments whose pH is 12 or more and having the ability to withstand temperatures at least up to about 230° F., the resin capable of being in a plastic state; b) covering most or all of the resin layer with manganese dioxide particles; and c) pressing the particles into the resin layer while in a plastic state so that the particles become mechanically bonded to the resin layer while allowing at least a catalytically effective percentage of the surface area of the particles to remain exposed and free of the resin layer to form said manganese dioxide catalyst assembly.