Method for the manufacture of acrylic or methacrylic acid

Details Method for the manufacture of acrylic or methacrylic acid Method for the manufacture of acrylic or methacrylic acid

B - Operations, Transporting

01

J

B01J 23/00 (2006.01) B01J 23/44 (2006.01) B01J 37/16 (2006.01) C07C 51/25 (2006.01)

Patent

CA 2412307

A catalyst for the manufacture of acrylic acid or methacrylic acid by the oxidation of propylene, acrolein, or isobutylene whereby said catalyst is prepared by reducing a palladium salt or palladium metal to palladium with a reducing agent such as propylene in an oxygen-free single or two phase aqueous organic solvent containing as a co-solvent a maximum concentration of a C2-C6 carboxylic acid or C3-C6 ketone.

On prépare un catalyseur destiné à la fabrication d'acide acrylique ou d'acide méthacrylique par l'oxydation du propylène, de l'acroléine ou de l'isobutylène, ledit catalyseur étant préparé par la réduction en palladium d'un sel de palladium ou d'un métal de palladium au moyen d'un agent réducteur tel que le propylène dans un solvant organique aqueux à une ou deux phases exempt d'oxygène contenant en tant que co-solvant une concentration maximale d'un acide C¿2?-C¿6? carboxylique ou d'une cétone C¿3?-C¿6?.

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