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    CORROSION RESISTANT AND DIMENSIONALLY STABLE ELECTRODE FOR ELECTROCHEMICAL PROCESSES
    11.
    发明专利
    CORROSION RESISTANT AND DIMENSIONALLY STABLE ELECTRODE FOR ELECTROCHEMICAL PROCESSES 未知

    公开(公告)号：CA1004181A

    公开(公告)日：1977-01-25

    申请号：CA153422

    申请日：1972-10-06

    Applicant: HOECHST AG

    Inventor： BERGNER DIETER ,  KOHLHAAS RUDOLF

    IPC: C23F13/00 ,  C25B11/04 ,  C25B11/10 ,  C25D17/10

    Abstract: 1415684 Metal oxido compounds HOECHST AG 9 Oct 1972 [7 Oct 1971] 46535/72 Heading C1A [Also in Divisions C6-C7] A crystalline oxido compound of ruthenium and/or iridium with gallium, indium, thallium, copper, zinc or cobalt is formed by heating a mixture or solution comprising thermally decomposable compounds of the relevant metals at a temperature below 900‹ C. in the presence or air or oxygen. Suitable decomposable compounds include the formates, acetates, oxalates, tartrates, oleates, citrates, stearates, naphthenates and resinates of any of the above metals and the chlorides, nitrosochlorides, nitrosonitrates, complex compounds and carbonyls of ruthenium and iridium.

    14.
    发明专利
    未知

    公开(公告)号：FI50514B

    公开(公告)日：1975-12-31

    申请号：FI86670

    申请日：1970-03-25

    Applicant: HOECHST AG

    Inventor： BAECHLE HANS TUISKO ,  KOHLHAAS RUDOLF

    IPC: C01B21/22

    Abstract: To produce N2O, ammonium nitrate is decomposed in an aqueous, chloride-containing solution in nitric acid while an ammonia atmosphere is maintained above the reaction mixture. The preferred temperature range of the solution is 110 DEG -125 DEG C. The atmosphere of ammonia is maintained by introducing at least part of the required ammonia into the gas volume of the reaction vessel. The decomposition of the ammonium nitrate and the formation of N2O is enhanced by the presence of catalytically active ions of manganese, copper, cerium, lead, bismuth, cobalt and nickel; manganese, especially in its bivalent form, being preferred.

    Phosphorus oxybromide - obtd by reacting tribromide/oxygen in presence of n oxides/org solvent
    15.
    发明专利
    Phosphorus oxybromide - obtd by reacting tribromide/oxygen in presence of n oxides/org solvent 未知

    公开(公告)号：DE2230109A1

    公开(公告)日：1974-01-10

    申请号：DE2230109

    申请日：1972-06-21

    Applicant: HOECHST AG

    Inventor： JOERCHEL EGON DR ,  KOHLHAAS RUDOLF

    IPC: C01B25/10

    Abstract: The process comprises (a) reacting phosphorus tribromide and oxygen in the presence of nitrogen oxides in an organic solvent at 0-120 degrees C, and (b) separating the formed phosphorus oxybromide by crystallisation or vacuum distilln. Use of solvent gives high yields of pure phosphorus oxybromide without risks of explosions, and allows reaction to be effected continuously. The solvent consists of a halohydrocarbon with a b.p. below 150 degrees C. After reaction the solvent may be removed by distilln. and the phosphorus oxybromide isolated by crystallisation, or alternatively phosphorus oxybromide is separated by distn. under 10-300 mm Hg at 60-100 degrees C. Reaction is effected at 0.5-10 atm. using 0.01-5 wt.% nitrogen oxides, calculated as NO2, based on phosphorus tribromide, and 20-90 vol. % solvent.

    ELECTRODE
    19.
    发明专利
    ELECTRODE 未知

    公开(公告)号：AU4742072A

    公开(公告)日：1974-04-11

    申请号：AU4742072

    申请日：1972-10-05

    Applicant: HOECHST AG

    Inventor： BERGNER DIETER ,  KOHLHAAS RUDOLF

    IPC: C23F13/00 ,  C25B11/04 ,  C25B11/10 ,  C25D17/10 ,  B32B15/04 ,  C01G45/02 ,  C01G55/00 ,  C23C3/04 ,  B01K3/06 ,  C01B7/06

    Abstract: 1415684 Metal oxido compounds HOECHST AG 9 Oct 1972 [7 Oct 1971] 46535/72 Heading C1A [Also in Divisions C6-C7] A crystalline oxido compound of ruthenium and/or iridium with gallium, indium, thallium, copper, zinc or cobalt is formed by heating a mixture or solution comprising thermally decomposable compounds of the relevant metals at a temperature below 900‹ C. in the presence or air or oxygen. Suitable decomposable compounds include the formates, acetates, oxalates, tartrates, oleates, citrates, stearates, naphthenates and resinates of any of the above metals and the chlorides, nitrosochlorides, nitrosonitrates, complex compounds and carbonyls of ruthenium and iridium.

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