Title:
MANUFACTURE OF ACETIC ACID ANHYDRIDE
Document Type and Number:
Japanese Patent JPS5948432
Kind Code:
A
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 DEG to 540 DEG 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.
Inventors:
BUIRUHERUMU FUOOGUTO
EAHARUTO IEEGAASU
EAHARUTO IEEGAASU
Application Number:
JP14200383A
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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