Process for purifying acids formed during liquid phase oxidation of butane
AssigneeHoechst Celanese Corporation
InventorsNicole G. Wallace, Kenneth A. Windhorst
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Abstract
A method of purifying the oxidate product formed by the liquid phase oxidation of C.sub.4 -C.sub.8 paraffinic hydrocarbons comprises adding a strong acid catalyst to the oxidate product to catalyze the break down of Michael addition products of unsaturated carbonyls and carboxylic acids so that the carbonyls can be distilled off during the initial stages of purification.
Claims15
A method of purifying an oxidate product formed by the liquid phase oxidation of a C.sub.4 -C.sub.8 paraffinic hydrocarbon, said oxidate product comprising carboxylic acids and the reaction products of unsaturated carbonyls and said carboxylic acids, said method comprising removing from said oxidate product said reaction products by adding a sulfonic acid catalyst to said oxidate product so as to break down said reaction products to separate unsaturated carbonyl and carboxylic acid components and distilling said unsaturated carbonyls from said carboxylic acids.
Dependencies are inferred from the claim text.