Title:
MANUFACTURE OF ACETIC ACID ANHYDRIDE
Document Type and Number:
Japanese Patent JPS5948434
Kind Code:
A
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 DEG to 540 DEG 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.
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Inventors:
BUIRUHERUMU FUOOGUTO
EAHARUTO IEEGAASU
HERUMAN GURAAZAA
EAHARUTO IEEGAASU
HERUMAN GURAAZAA
Application Number:
JP14200683A
Publication Date:
March 19, 1984
Filing Date:
August 04, 1983
Export Citation:
Assignee:
HOECHST AG
International Classes:
C07C53/12; B01J31/00; C07B61/00; C07C51/00; C07C51/56; C07C67/00; (IPC1-7): B01J31/36; C07C51/56; C07C53/12
Attorney, Agent or Firm:
Toshio Yano
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