METHOD FOR ENHANCING THE CARBONYLATION RATE OF METHANOL

摘要

According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pK a ) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca>0.8 mol/mol) for more efficient production of acetic acid.