Process for producing acetic acid
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTomiya Isshiki, Yasuhiko Kijima, Takayuki Watanabe
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Abstract
There is disclosed a process for producing acetic acid in which methyl formate is isomerized into acetic acid with a catalyst containing at least one of Pd, Ru and Ir, at least one compound of said metals or a mixture thereof, and a promoter of a halide compound in the presence of carbon monoxide. This process can be carried out under mild reaction conditions and acetic acid is obtained in high yield.
Claims14
A process for producing acetic acid which comprises contacting methyl formate with a catalyst system consisting essentially of at least one catalytic ingredient selected from the group consisting of metallic palladium, a palladium compound and a mixture thereof, a primary promoter comprising a halide compound having a concentration of 10.sup.-6 to 15 M/l in terms of halogen atom and a secondary promoter comprising an organic trivalent phosphorus compound in the presence of carbon monoxide having a partial pressure of 3 to 250 atm and in the presence of at least one solvent selected from the group consisting of acetic acid and methyl acetate at a temperature of from 100.degree. to 250.degree. C.
Dependencies are inferred from the claim text.