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Oxovanadium Complexes Supported on Acid-prepared Mesoporous Silica (APMS) for Catalytic Oxidation of Mustard Gas Analogue 2-chloroethyl Ethyl Sulfide

Rahul S. Patel

出版	University of Vermont, 2010
URL	http://books.google.com.hk/books?id=uNipYgEACAAJ&hl=&source=gbs_api

註釋

In recent years, tremendous progress has been made in the field of catalysis. Catalysis is mainly of two types; homogeneous and heterogeneous. In homogeneous catalysis, the catalyst is soluble in the reaction medium and mayor may not be isolated at the end of the reaction. This is the chief disadvantage of homogeneous catalysis. A heterogeneous catalyst on the other hand is insoluble in the reaction medium and can be simply filtered off after the reaction is over and reused. The insolubility of the heterogeneous catalyst comes either being high molecular weight or supported on thermally stable, benign porous or non porous solids such as silica, polymers or cellulose. Many transition metal based catalysts find wide applications in industry today. They are used as catalysts for many important synthetic reactions. Of all the transition metals, vanadiwn based catalysts are extremely useful. Vanadiwn and vanadium based catalysts are known to catalyze many reactions in particular oxidations in presence of peroxide oxidants.