Patent ID: 6506932
Filing Date: 2003-01-14
Classification: B01J,C07C

Abstract:
A method for the production of an aromatic carbonyl compound and/or an aromatic carboxylic acid by oxidation of an alkyl group of an aromatic compound possessing at least one alkyl substituent with a molecular oxygen-containing gas, which comprises effecting the oxidation by the use of a catalyst having at least one kind of element selected from the group consisting of phosphorus, silicon, and germanium as a hetero atom and at least one kind of element selected from the group consisting of molybdenum, tungsten, vanadium, and niobium as a poly atom and comprising a heteropolyoxometalate anion possessing two defective structure sites and at least one kind of element selected from the group of elements of Periods 4Ëœ6 of Groups IB, VA, VIIA, and VIII in the Periodic Table of the Elements, wherein the skeleton of the heteropolyoxometalate anion possessing the two defective structure sites is a Keggin type heteropoly acid ion possessing two defective structure sites including at least one of &ggr;, &dgr;, and &egr; isomers represented by the following general formula (1)[Y1M10O36]qâˆ’â€ƒâ€ƒ(1), wherein Y is at least one kind of element selected from the group consisting of silicon, phosphorus, and germanium, M is at least one kind of element selected from the group consisting of molybdenum, tungsten, vanadium, and niobium, and q is a positive integer to be fixed by the valency of the elements Y and M.