CATALYST AND METHYL ETHYL KETONE PRODUCTION PROCESS Russian patent published in 2006 - IPC B01J23/44 B01J27/199 B01J27/26 C07C49/10 

FIELD: industrial organic synthesis and catalysts.

SUBSTANCE: invention relates to a methyl ethyl ketone production process via catalytic oxidation of n-butenes with oxygen and/or oxygen-containing gas. Catalyst is based on (i) palladium stabilized with complexing ligand and (ii) heteropolyacid and/or its acid salts, in particular molybdo-vanado-phosphoric heteropolyacid having following composition: H₁₁P₄Mo₁₈V₇O₈₇ and/or acid salt Na_1.2H_9.3Mo₁₈V₇O₈₇, said complexing ligand being notably phthalocyanine ligand. Catalyst is regenerated by making it interact with oxygen and/or oxygen-containing gas at 140-190°C and oxygen pressure 1 to 10 excessive atmospheres. Oxidation of n-butenes is conducted continuously in two-stage mode at 15 to 90°C in presence of above-defined catalyst.

EFFECT: enhanced process efficiency due to increased stability of catalyst resulting in considerably increased productivity and selectivity.

7 cl, 1 dwg, 3 tbl, 8 ex