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363 records (took 0.018 seconds)

    81.
    发明专利
    未知

    公开(公告)号：SU432919A1

    公开(公告)日：1974-06-25

    申请号：SU1622432

    申请日：1971-02-22

    IPC: B01J37/03 ,  B01J23/44 ,  B01J11/08

    82.
    发明专利
    未知

    公开(公告)号：SU431899A1

    公开(公告)日：1974-06-15

    申请号：SU1675849

    申请日：1971-06-23

    IPC: B01J11/08

    Alumina supported catalyst - for nitrobenzene reduction contains needles of aluminium-lithium
    84.
    发明专利
    Alumina supported catalyst - for nitrobenzene reduction contains needles of aluminium-lithium 未知

    公开(公告)号：DE2244401A1

    公开(公告)日：1974-05-16

    申请号：DE2244401

    申请日：1972-09-09

    Applicant: BAYER AG

    Inventor： THELEN HERMANN DR ,  SCHWERDTEL WULF DR ,  HALCOUR KURT DR ,  SWODENK WOLFGANG DR

    IPC: B01J23/64 ,  C07C85/10 ,  B01J11/08

    Abstract: Supported Pd catalyst for nitrobenzene reduction contains 0.1-10 pref. 1-8 wt.% of Pd and 0.1-5 pref. 0.6% V or a cpd. of V on an alumina >=20% of which has been converted to needles of Li-Al of internal surface 20-120 m2/g and pore size 200-800A. Reduction temp. is 100-350 pref. 200-300 degrees C at 1-100 bars pref. 1-20 bars with at least stoichiometric H2 (ratio H2: nitrobenzene =22:1). The support is prepd. from alumina (200-350 m2/g) impregnated with lithium soln. The needles are formed by calcination at 900-1300 degrees C pref. 1,000-1,200 degrees C for 6 hr. This catalyst lasts >1,000 hrs. increasing after regeneration compared with 260-280 hrs. for nickel sulphide.

    85.
    发明专利
    未知

    公开(公告)号：DD104722A5

    公开(公告)日：1974-03-20

    申请号：DD16545572

    申请日：1972-09-05

    IPC: B01J11/08

    88.
    发明专利
    未知

    公开(公告)号：RO55800A3

    公开(公告)日：1974-01-03

    申请号：RO5932369

    申请日：1969-03-10

    IPC: B01J11/08

    Protected noble metal catalysts - for use in quartz combustion ovens
    89.
    发明专利
    Protected noble metal catalysts - for use in quartz combustion ovens 未知

    公开(公告)号：DE2213385A1

    公开(公告)日：1973-10-04

    申请号：DE2213385

    申请日：1972-03-20

    Applicant: MAIHAK AG

    Inventor： KNOLL WERNER DIPL ING

    IPC: B01J8/02 ,  B01J35/02 ,  B01J11/08

    Abstract: Noble-metal catalysts, esp. Pt, which are to be used in quartz combustion ovens, esp. those used for the determination of organic carbon in water (combustion being carried out catalytically in a hot moist environment) are sheathed with a vapour/gas permeable, heat resistant, non-noble, stable, highly chemically resistant material. Pref. oxidisable, rust resisting and acid-resisting steel is used. By this means the formation of Si-eutectoid is avoided, leaching to increased furnace life and effective life of the catalyst body. The sheathing is pref. in the form of cylindrical metal meshes, with a wire spiral if desired.

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