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AssigneeAmoco Corporation
InventorsDavid L. Sikkenga, George E. Kuhlmann, Paul K. Behrens, Martin A. Zeitlin, Stephen V. Hoover
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Disclosed is a method for preparing an aromatic carboxylic acid comprising oxidizing in the liquid phase an aromatic feed compound containing at least one alkyl or acyl group with a molecular oxygen-containing gas, in a solvent comprising a low molecular weight aliphatic carboxylic acid, and in the presence of a heavy metal oxidation catalyst, thereby forming an oxidation reaction product mixture comprising an aromatic carboxylic acid; subsequently heating the oxidation reaction product mixture at a temperature of at least about 500.degree. F. to form a second product mixture; and recovering from the second product mixture the aromatic carboxylic acid. The method of this invention provides for purer, larger particle size aromatic carboxylic acid product.
A method for preparing an aromatic carboxylic acid comprising a) oxidizing in the liquid phase an aromatic compound having at least one oxidizable alkyl or acyl group with an oxygen-containing gas, in a solvent comprising a low molecular weight carboxylic acid, in the presence of a oxidation catalyst comprising heavy metal components, and at a reaction temperature of about 250.degree. F. to about 450.degree. F., thereby forming an oxidation reaction product mixture comprising an aromatic carboxylic acid;
A method for preparing an aromatic carboxylic acid comprising a) oxidizing in the liquid phase an aromatic compound having at least one oxidizable alkyl or acyl group with an oxygen-containing gas, in a solvent comprising a low molecular weight carboxylic acid, in the presence of an oxidation catalyst comprising heavy metal components, and at a reaction temperature of about 250.degree. F. to about 450.degree. F., thereby forming an oxidation reaction product mixture comprising an aromatic carboxylic acid;
A method for preparing an aromatic carboxylic acid comprising a) oxidizing in the liquid phase an aromatic compound having at least one oxidizable alkyl or acyl group with an oxygen-containing gas, in a solvent comprising a low molecular weight carboxylic acid, in the presence of an oxidation catalyst comprising heavy metal components, and at a reaction temperature of about 250.degree. F. to about 450.degree. F., thereby forming an oxidation reaction product mixture comprising an aromatic carboxylic acid;
Dependencies are inferred from the claim text.