中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.021 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE1667386A1

    公开(公告)日：1971-06-09

    申请号：DE1667386

    申请日：1967-04-15

    Applicant: BASF AG

    Inventor： LORENZ ERNST DR ,  WODTCKE FRIEDRICH DR ,  LUDWIG DR EBENHOECH FRANZ ,  GIESLER ERICH DR ,  KIRNER HELMUT DR

    IPC: B01J23/85 ,  B01J37/02 ,  C01B3/16 ,  C10K3/04 ,  C01B

    Abstract: 1,213,343. Catalytic reaction of carbon monoxide with steam. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 April, 1968 [15 April, 1967], No. 17188/68. Heading C1A. A process for the preparation of hydrogen and carbon dioxide from gases containing carbon monoxide and steam, comprises passing the gases over a catalyst made from nickel and/or cobalt sulphides or oxides, oxides or sulphides of a transition metal of Group VI of the Periodic Table, and an alumina containing supporting material containing zinc and/or magnesium oxides. The reaction is carried out at pressures of 1 to 150 atmospheres (absolute) and a temperature of 180‹ C. to 550‹ C. The catalyst preferably contains at least 10% (wt) of aluminium oxide and at least 5% (wt.) magnesium and/or zinc oxide or a mixture thereof. Under the reaction conditions the catalyst preferably contains 15% to 85% of aluminium - magnesium or aluminium - zinc spinel. Oxidic forms of the catalyst may be prepared by grinding the dry constituent oxides together or impregnating the supporting material with solutions of salts of the metals specified, forming a paste, extruding or pelletizing, then drying. The mechanical strength of the catalyst can be improved by including an hydraulic binder such as Portland cement or calcium aluminate. The catalyst is activated by heating to 400‹ C. to 600‹ C. in a stream of air. Sulphidic catalysts are prepared by passing a mixture of steam, hydrogen sulphide and hydrogen over the oxidic forms for 3 hours at 400‹ C. Sulphidic catalysts are more active than oxidic catalysts.

    Boron trifluoride prodn - by dissolving boron cpd in sulphuric acid, adding sulphur trioxide and introducing fluorspar
    6.
    发明专利
    Boron trifluoride prodn - by dissolving boron cpd in sulphuric acid, adding sulphur trioxide and introducing fluorspar 未知

    公开(公告)号：DE2128682A1

    公开(公告)日：1973-02-08

    申请号：DE2128682

    申请日：1971-06-09

    Applicant: BASF AG

    Inventor： GIESLER ERICH DR

    IPC: C01B35/06 ,  C01B35/00

    Abstract: Boric acid or its deriv. is dissolved in conc. H2SO4 and then SO3 is introduced into the soln. in an amt. not exceeding the total stoichiometric amt. necessary to bind water liberated by the formation of boron sulphate and free water contained in the sulphuric acid soln.; only then fluorspar is introduced into the soln. High yields are obtained. Fuming is avoided, because the boron cpd. is dissolved first, and SO3 introduced subsequently into the soln. is bound by the liberated water. BF3 so produced is free of SO3 contamination.

Patent Agency Ranking