| 摘要 |
A process for the carbonylation of an unsaturated compound comprises the steps of: a) supplying a first feed stream comprising carbon monoxide and an unsaturated compound to the reactor; b) supplying a second feed stream comprising an alkyl alcohol of the formula: R-OH, where R is an alkyl group, to the reactor; c) reacting together said first and second feed streams in the reactor in the presence of a metal-containing carbonylation catalyst, which catalyses the carbonylation reaction between carbon monoxide and the alkene, to form a product comprising an alkyl ester; characterised in that the carbonylation reaction is carried out in the presence of a further metal species. The further metal species is preferably cobalt. |
