Improved catalyst system

Details Improved catalyst system Improved catalyst system

C - Chemistry, Metallurgy

07

C

C07C 51/14 (2006.01) B01J 31/24 (2006.01)

Patent

CA 2618574

A continuous carbonylation process for high turnover carbonylation, and a carbonylation reaction medium and product stream thereof . The process comprises carbonylating an ethylenically unsaturated compound with carbon monoxide in the presence of a source of hydroxyl groups and a catalyst system. The catalyst system comprising: (a) a bidentate phosphine, arsine or stibine ligand; and (b) a catalytic metal selected from a group VIB or group VIIIB metal or a compound thereof . The catalytically active concentration of said catalytic metal, measured as the ACCF (product Kg . hr-1. Dm-3 ) , is maintained at less than 0.5.

La présente invention concerne un procédé continu de carbonylation pour une carbonylation à haut-débit, un milieu réactionnel de carbonylation et un flux de produit provenant de celui-ci. Le procédé comprend la carbonylation d~un composé éthyléniquement insaturé avec du monoxyde de carbone en présence d'une source de groupes hydroxyle et un système de catalyseur. Le système de catalyseur comprend : (a) un ligand bidentate de type phosphine, arsine ou stibine ; et (b) un métal catalytique choisi parmi un métal du Groupe VIB ou du Groupe VIIIB ou un composé à base de celui-ci. La concentration catalytiquement active dudit métal catalytique, mesurée sous la forme d~ACCF (produit kg.h-1.Dm-3), est maintenue en dessous de 0,5.

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