Patent ID: 8835681
Filing Date: 2014-09-16
Classification: C07C

Abstract:
1. A continuous process for the production of acetic acid comprising: (a) reacting a compound, selected from the group consisting of methanol and reactive derivatives thereof, with carbon monoxide to produce acetic acid in an aqueous reaction mixture, the reaction being carried out while maintaining a concentration of water in the reaction mixture of from 0.1 wt % up to about 8 wt %, the reaction also being carried out in the presence of a homogeneous rhodium-based catalyst system comprising: (b) recovering acetic acid from the reaction mixture; wherein the metal of the metallic co-catalyst composition is present in a molar ratio to rhodium of from at least 5:1 up to 50:1 and wherein further the reaction mixture contains less than 75 percent of a theoretical amount of inorganic iodide equivalent to the presence of the metallic co-catalyst composition.