Oxidation catalyst and process
AssigneeMonsanto Technology LLC
InventorsJames Coleman, Martin McGrath
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Abstract
An oxidation catalyst is prepared by pyrolyzing a source of iron and a source of nitrogen on a carbon support. Preferably, a noble metal is deposited over the modified support which comprises iron and nitrogen bound to the carbon support. The catalyst is effective for oxidation reactions such as the oxidative cleavage of tertiary amines to produce secondary amines, especially the oxidation of N-(phosphonomethyl)iminodiacetic acid to N-(phosphonomethyl)-glycine.
Claims66
An oxidation catalyst comprising a particulate carbon support having a transition metal/nitrogen composition thereon, said transition metal being selected from the group consisting of iron and cobalt, wherein said transition metal/nitrogen composition comprises an iron or cobalt nitride, an iron or cobalt nitride-carbide, or combinations thereof, and the nitrogen of said transition metal/nitrogen composition constitutes from about 1% to about 5% by weight of said catalyst.
An oxidation catalyst comprising a particulate carbon support having a transition metal/nitrogen composition thereon, said transition metal being selected from the group consisting of iron and cobalt, wherein said transition metal/nitrogen composition comprises an iron or cobalt nitride, an iron or cobalt nitride-carbide or combinations thereof, the nitrogen of said transition metal/nitrogen composition constitutes from about 0.1% to about 7% by weight of said catalyst, and said particulate carbon support has a BET surface area of from about 500 to about 2100 m2/g.
Dependencies are inferred from the claim text.