Process for selectively preparing acetic anhydride by carbonylat

Details Process for selectively preparing acetic anhydride by carbonylat Process for selectively preparing acetic anhydride by carbonylat

1983-07-21

1985-05-28

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

562519, C07C 5156, C07C 5112

Patent

active

045199566

ABSTRACT:
A process for producing acetic anhydride is disclosed which comprises reacting methyl acetate with carbon monoxide at an elevated temperature and pressure in the presence of an iodine-free catalyst system wherein the catalyst consists of ruthenium compound, quaternary phosphonium salt and cobalt-compound. A further embodiment comprises recycling product acetic anhydride with methanol to produce acetic acid.

REFERENCES:
patent: 2727902 (1955-12-01), Reppe et al.
patent: 2730546 (1958-01-01), Reppe et al.
patent: 4115444 (1978-09-01), Rizkalla
patent: 4140865 (1979-02-01), Fernholz et al.
patent: 4189441 (1980-02-01), Braca et al.
patent: 4337351 (1982-06-01), Larkins

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