Ammoxidation

James F. Brazdil

James F. Brazdil

INEOS Technologies - R&D, Naperville, Illinois

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Mark A. Toft

Mark A. Toft

INEOS Technologies - R&D, Naperville, Illinois

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First published: 05 March 2010
Citations: 1

Abstract

Ammoxidation catalysis is the selective catalytic oxidation of a hydrocarbon molecule in the presence of ammonia that incorporates a nitrile (CN) functionality into the molecule. It is closely related chemically and catalytically to selective catalytic oxidation of a hydrocarbon molecule to an aldehyde or carboxylic acid. Virtually, all organic molecules that can undergo selective oxidation to an aldehyde or carboxylic acid can also be oxidized to the corresponding nitrile molecule by the appropriate catalyst in the presence of ammonia. This chapter describes the breadth of ammoxidation catalyst chemistry that encompasses the transformation of alkanes, alkenes, aromatic molecules, and oxygenated substrates. In addition to describing the range of known ammoxidation reaction chemistry, details of the surface mechanism of selective ammoxidation are presented. Specific relationships between the reaction mechanism and the surface and bulk structures of known ammoxidation catalysts are discussed including the most commercially important application of ammoxidation catalysis, selective ammoxidation of propylene to acrylonitrile.

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