Process for oxycarbonylation of aromatic hydrocarbons
AssigneeSuntech, Inc.
InventorJohn J. van Venrooy
Life of this patent
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Abstract
A process for making aromatic carboxylic acids by reacting carbon monoxide with an aromatic compound in the presence of a mixture of a thallium salt and a palladium salt whereby highly efficient use of the available oxidant is achieved.
Claims8
A process for making aromatic carboxylic acids which comprises reacting at a temperature of from about 0.degree. to about 100.degree. C, an aromatic hydrocarbon of the benzene series having at least one ring carbon atom attached to a hydrogen atom with carbon monoxide at a pressure of from about 10 to about 500 psi in a solvent selected from the group consisting of lower aliphatic carboxylic acids, their anhydrides and mixtures thereof and in the presence of a mixture comprising thallium trifluoroacetate and a divalent palladium salt in a mole ratio of thallium to palladium of from about 10:1 to about 1000:1.
Dependencies are inferred from the claim text.