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    13.
    发明专利
    未知

    公开(公告)号：DE59004601D1

    公开(公告)日：1994-03-24

    申请号：DE59004601

    申请日：1990-10-26

    Applicant: BASF AG

    Inventor： JOERG KLAUS DR ,  MUELLER FRANZ-JOSEF DR ,  IRGANG MATTHIAS DR ,  MAROSI LASZLO DR ,  BORCHERT GERHARD

    IPC: C07C67/00 ,  C07C67/40 ,  C07C69/06

    Abstract: Process for the preparation of methyl formate by reaction of methanol on copper-containing catalysts at elevated temperature and in the gas phase by using a catalyst containing, apart from 30 to 80% by weight of copper, calculated as CuO, 20 to 70% by weight of magnesium silicates, calculated as MgO plus SiO2 in which the MgO/SiO2 molar ratio is 0.3 to 1.5, and which can be additionally doped with the metals zinc, chromium and/or barium in amounts of, in each case, up to 1.5% by weight, calculated as ZnO, Cr2O3 and BaO.

    14.
    发明专利
    未知

    公开(公告)号：DE3936854A1

    公开(公告)日：1991-05-08

    申请号：DE3936854

    申请日：1989-11-06

    Applicant: BASF AG

    Inventor： JOERG KLAUS DR ,  MUELLER FRANZ-JOSEF DR ,  IRGANG MATTHIAS DR ,  MAROSI LASZLO DR ,  BORCHERT GERHARD

    IPC: C07C67/00 ,  C07C67/40 ,  C07C69/06

    Abstract: Process for the preparation of methyl formate by reaction of methanol on copper-containing catalysts at elevated temperature and in the gas phase by using a catalyst containing, apart from 30 to 80% by weight of copper, calculated as CuO, 20 to 70% by weight of magnesium silicates, calculated as MgO plus SiO2 in which the MgO/SiO2 molar ratio is 0.3 to 1.5, and which can be additionally doped with the metals zinc, chromium and/or barium in amounts of, in each case, up to 1.5% by weight, calculated as ZnO, Cr2O3 and BaO.

    15.
    发明专利
    未知

    公开(公告)号：DE3717285A1

    公开(公告)日：1988-12-01

    申请号：DE3717285

    申请日：1987-05-22

    Applicant: BASF AG

    Inventor： MAROSI LASZLO DR

    IPC: C01B21/068 ,  C01B21/087 ,  C04B35/58

    Abstract: Silicon nitride powder is prepared by reacting silicon tetrachloride dissolved in an inert solvent, with gaseous ammonia, and the siliconimide formed is converted into silicon nitride by thermal treatment at from 800 to 1600 DEG C, if desired after prior removal of the ammonium chloride formed at the same time. During the reaction of the silicon tetrachloride with ammonia, the reaction mixture is removed continuously from the reaction zone, liquid and the resulting solids, essentially consisting of siliconimide and ammonium chloride, are separated from one another, and the liquid removed is recycled to the reaction zone.

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