Polysulfide generation using a manganese dioxide catalyst...

Details Polysulfide generation using a manganese dioxide catalyst... Polysulfide generation using a manganese dioxide catalyst...

2004-11-30

2009-06-23

Parker, Frederick J (Department: 1792)

Coating processes

Solid particles or fibers applied

Applying superposed diverse coatings or coating a coated base

C427S202000, C427S369000

Reexamination Certificate

active

07550177

ABSTRACT:
A catalyst assembly for use in polysulfide generation in white liquor employed in a pulp or paper making process includes a substrate for supporting a catalytic material, at least the surface of which is formed of a corrosion resistant thermoplastic or thermosetting resin, and granular manganese dioxide particles partially embedded in the surface to be mechanically bonded thereto, a catalytically effect percentage of the surface area of the particles being exposed and free of the resin. Also disclosed is a reactor for utilizing such a catalysis assembly and a method of making the catalysis assembly.

REFERENCES:
patent: 5124177 (1992-06-01), Kasmark et al.
patent: 5446003 (1995-08-01), Augustine et al.
patent: 5792513 (1998-08-01), Koslow et al.
patent: 6540843 (2003-04-01), Liu et al.
patent: 2001/0008717 (2001-07-01), Iijima
patent: WO 2004/038092 (2004-05-01), None

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