Process for making acetic anhydride

Details Process for making acetic anhydride Process for making acetic anhydride

1983-07-19

1985-02-05

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260549, C07C 5154, C07C 5156

Patent

active

044977476

ABSTRACT:
The disclosure relates to a process for making acetic anhydride by reacting methyl acetate and/or dimethylether with carbon monoxide, if desired in admixture with up to 20 volume % hydrogen, under practically anhydrous conditions at temperatures of 120.degree. to 270.degree. C., under pressures of 1 to 500 bars in the presence of a catalyst system containing nickel or a nickel compound, an organic iodine or bromine compound as well as a tertiary or quaternary organic phosphorus compound. More particularly, a catalyst system containing a titanium or zirconium compound as an additional constituent is used.

REFERENCES:
patent: 2729651 (1956-01-01), Reppe et al.
patent: 4140865 (1979-02-01), Fernholz et al.
patent: 4333884 (1982-06-01), Kubbeler et al.

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