| abstract |
A process for the production of a carboxylic acid and/or a carboxylic acidnanhydride which process comprises contacting a reaction composition comprisingnan alcohol and/or a carboxylic acid ester, optionally water, a first hydrocarbylnhalide and/or a hydrocarbyl ether reactant and a second hydrocarbyl halidenpromoter, the first and second hydrocarbyl halides being the same or different, withncarbon monoxide in the presence of a catalyst comprising an insoluble imidazole-containingnresin supporting a Group VIII metal species. |