Patent ID: 6548444
Filing Date: 2003-04-15
Classification: B01J,C07C

Abstract:
A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process, said catalyst comprising a solid component comprising from about 0.1 weight percent to about 10 weight percent of iridium and from about 0.1 weight percent to about 10 weight percent of tin which are associated with an activated carbon support material, wherein said weight percentages are based on the total weight of the solid catalyst, and a vaporous halide component selected from the group consisting of hydrogen iodide, methyl iodide, ethyl iodide, 1-iodopropane, 2-iodobutane, 1-iodobutane, hydrogen bromide, methyl bromide, ethyl bromide, benzyl iodide and mixtures thereof.