Oxidation catalyst and process
AssigneeMonsanto Technology LLC
InventorsJames P. Coleman, Martin P. McGrath, Fuchen Liu, Juan Arhancet
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Abstract
This invention relates to the field of heterogeneous catalysis, and more particularly to catalysts including carbon supports having formed thereon compositions which comprise a transition metal in combination with nitrogen and/or carbon. The invention further relates to the fields of catalytic oxidation, including the preparation of secondary amines by the catalytic oxidation of tertiary amines.
Claims35
A process for the oxidation of an organic substrate selected from the group consisting of alcohols, aldehydes, tertiary amines, secondary amines and acids, wherein the alcohols are oxidized to aldehydes, ketones and/or acids, the aldehydes are oxidized to acids, the tertiary amines are oxidized to secondary amines, the secondary amines are oxidized to primary amines and the acids are oxidized to carbon dioxide and water, the process comprising contacting said substrate with an oxidizing agent in the presence of an oxidation catalyst, wherein said oxidation catalyst comprises a transition metal composition comprising a transition metal and nitrogen on a carbon support, wherein said transition metal composition constitutes at least about 0.2% by weight of the catalyst and said transition metal composition comprises a transition metal nitride, transition metal carbide-nitride, or a combination thereof.
A process for the oxidation of N-(phosphonomethyl) iminodiacetic acid or a salt thereof to form N-(phosphonomethyl) glycine or a salt thereof, the process comprising:
- introducing a gas comprising molecular oxygen into an aqueous reaction medium comprising N-(phosphonomethyl) iminodiacetic acid or a salt thereof and an oxidation catalyst;
- and
- oxidizing N-(phosphonomethyl)iminodiacetic acid or a salt thereof in the presence of the oxidation catalyst in the aqueous reaction medium to form N-(phosphonomethyl)glycine or a salt thereof, wherein:
- said oxidation catalyst comprises a transition metal composition comprising a transition metal and nitrogen on a carbon support, wherein said transition metal composition constitutes at least about 0.2% by weight of the catalyst and said transition metal composition comprises a transition metal nitride, transition metal carbide-nitride, or a combination thereof.
Dependencies are inferred from the claim text.