PROCESS FOR THE PREPARATION OF ACETIC ANHYDRIDE

    公开(公告)号:DE3360893D1

    公开(公告)日:1985-10-31

    申请号:DE3360893

    申请日:1983-08-11

    Applicant: HOECHST AG

    Abstract: The disclosure relates to a process for making acetic anhydride by reacting methyl acetate and/or dimethylether with carbon monoxide, if desired in admixture with up to 20 volume % hydrogen, under practically anhydrous conditions at temperatures of 120 DEG to 270 DEG C., under pressures of 1 to 500 bars in the presence of a catalyst system containing nickel or a nickel compound, an organic iodine or bromine compound as well as a tertiary or quaternary organic phosphorus compound. More particularly, a catalyst system containing a titanium or zirconium compound as an additional constituent is used.

Patent Agency Ranking