Process for making acetic anhydride

Details Process for making acetic anhydride Process for making acetic anhydride

1983-07-19

1985-05-21

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5156

Patent

active

045185395

ABSTRACT:
The disclosure relates to a process for making acetic anhydride wherein methyl acetate and/or dimethylether (is) are reacted with carbon monoxide 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 comprised of noble metals belonging to group VIII of the Periodic System of the elements or their compounds, iodine and/or its compounds and a tertiary or quaternary organic nitrogen, phosphorus, arsenic or antimony compound. More particularly, use is made of a catalyst system containing vanadium or niobium or their compounds as additional constituents, the catalyst system being used in combination with reaction gas containing carbon monoxide and 5 to 30 volume % hydrogen.

REFERENCES:
patent: 2730546 (1956-01-01), Reppe et al.
patent: 4430506 (1984-02-01), Gauthier-Lafaye et al.

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