Method for oxidising hydrocarbons, alcohols or ketones using...

C - Chemistry – Metallurgy – 07 – C

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C07C 55/14 (2006.01) C07C 51/215 (2006.01) C07C 51/23 (2006.01) C07C 51/235 (2006.01) C07C 51/245 (2006.01) C07C 51/31 (2006.01)

Patent

CA 2215472

A method for oxidising liquid-phase hydrocarbons, alcohols or ketones in the presence of a heterogeneous catalyst. The method particularly enables the oxidation of a liquid-phase hydrocarbon, alcohol or ketone to carboxylic acid using molecular oxygen or a gas containing same, in an at least partial solvent for the desired carboxylic acid, and in the presence of a heterogeneous catalyst comprising at least manganese atoms incorporated into the crystal lattice of a molecular sieve. The liquid phase comprises a solvent generally selected from polar protic solvents and polar aprotic solvents, and particularly from carboxylic acids and esters thereof.

La présente invention concerne l'oxydation d'hydrocarbures, d'alcools ou de cétones, en phase liquide et en présence d'un catalyseur hétérogène. Il s'agit plus précisément de l'oxydation en acide carboxylique, par l'oxygène moléculaire ou un gaz en contenant, d'un hydrocarbure, d'un alcool ou d'une cétone, en phase liquide, dans un solvant au moins partiel de l'acide carboxylique visé, en présence d'un catalyseur hétérogène comportant au moins des atomes de manganèse incorporés dans le réseau cristallin d'un tamis moléculaire. La phase liquide comporte un solvant généralement choisi parmi les solvants protiques polaires et les solvants aprotiques polaires, plus particulièrement parmi les acides carboxyliques et leurs esters.

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