Cristal USA, Inc.

Other

Tronox LLC

Steve M Augustine

David Monroe Chapman

Dennis F Clark

Mark Barrett Watson

Guoyi Fu

Modasser El-Shoubary

Dennis Clark

Catalyst support materials, catalysts, methods of making such and uses thereof are described. Methods of making catalyst support material include combining anatase titania slurry with i) a low molecular weight form of silica; and ii) a source of Mo to form a TiO&#x2014;MoO&#x2014;SiOmixture. Catalyst support material include from about 86% to about 94% weight anatase titanium dioxide; from about 0.1% to about 10% weight MoO; and from about 0.1% to about 10% weight SiO. Low molecular weight forms of silica include forms of silica having a volume weighted median size of less than 4 nm and average molecular weight of less than 44,000, either individually or in a combination of two or more thereof. Catalyst include such catalyst support material with from about 0.1 to about 3% weight of VOand optionally from about 0.01% to about 2.5% weight P.

Catalyst support materials, catalysts, methods of making them and uses thereof

DeNOx catalysts for the reduction of NOx compounds and porous catalyst support materials are provided. The inventive catalysts comprise an active metal catalyst component and mixed TiO/ZrOporous support particles that comprise a) a crystalline phase comprising titanium dioxide and/or a titanium/zirconium mixed oxide, b) an amorphous phase comprising zirconium, and c) a small amount of one or more metal oxide(s) or metalloid oxide(s) deposited on the amorphous outer layer. The inventive catalysts exhibit superior activity and ammonia selectivity.

[object Object]

Growing community of inventors

Ellicott City, MD, United States of America

Steve M Augustine