METHOD FOR PREPARING ACETIC ACID AND/OR METHYL ACETATE IN THE PRESENCE OF IRIDIUM AND PLATINUM

摘要

The invention relates to a process for the preparation of acetic acid and/o r methyl acetate in the liquid phase by the carbonylation of methanol and/or t he isomerization of methyl formate in the presence of water, a solvent, a homogeneous catalyst system comprising iridium and a halogen-containing promoter, and carbon monoxide, wherein said catalyst system also comprises platinum.