Process for making acetic anhydride

Details Process for making acetic anhydride Process for making acetic anhydride

1983-07-19

1985-07-16

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260549, C07C 5154

Patent

active

045295603

ABSTRACT:
The disclosure relates to a process for making acetic anhydride by reacting methyl acetate and/or dimethylether with carbon monoxide, which may be used in admixture with up to 30 volume % hydrogen, under practically anhydrous conditions at temperatures of 390.degree. to 540.degree. K., under pressures of 1 to 300 bars in the presence of a catalyst system containing nickel or nickel compounds, iodine and/or its compounds as well as a tertiary or quaternary organic nitrogen, phosphorus, arsenic or antimony compound. More particularly a catalyst system is used which contains vanadium or niobium or a compound thereof as an additional constituent.

REFERENCES:
patent: 4115444 (1978-09-01), Rizkalla
patent: 4140865 (1979-02-01), Fernholz et al.

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