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    2.
    发明专利
    未知

    公开(公告)号：SE347010B

    公开(公告)日：1972-07-24

    申请号：SE1413468

    申请日：1968-10-18

    Applicant: BAYER AG

    Inventor： KROENIG W ,  HALVOUR K

    IPC: C10G65/06 ,  C10G23/04

    Abstract: 1,207,269. Hydrogenation of pyrolysis gasoline. FARBENFABRIKEN BAYER A.G. 11 Sept., 1968 [19 Oct., 1967], No. 43202/68. Addition to 1,109,726. Heading C5E. In a modification of the process for the selective hydrogenation of pyrolysis gasolines or fractions thereof in the presence of noble metal catalysts on aluminium spinel supports at an elevated temperature according to the parent Specification 1,109,726, the hydrogenation treatment at a temperature below 100‹ C. is followed by a similar treatment at a temperature of from 150‹ to 250‹ C., noble metals on aluminium spinel supports being used as catalysts. The first hydrogenation removes gum-forming diolefins; the second removes mono-olefins. Some desulphurization also takes place. The catalyst may be Pd or mixtures of Pd with Pt, Ru or Au. The spinel may be made by heating Al 2 O 3 with an oxide of Li, Be, Mg, Zn, Mn, Co or Ni.

    PROCESS FOR THE CONTINUOUS PREPARATION OF VINYL ACETATE
    6.
    发明专利
    PROCESS FOR THE CONTINUOUS PREPARATION OF VINYL ACETATE 未知

    公开(公告)号：YU218867A

    公开(公告)日：1973-02-28

    申请号：YU218867

    申请日：1967-11-11

    Applicant: BAYER AG ,  HOECHST AG

    Inventor： KROENIG W ,  ROSCHER G ,  SCHWERDTEL W ,  SENNEWALD K

    IPC: B01J21/00 ,  B01J21/08 ,  B01J23/00 ,  B01J23/52 ,  B01J23/58 ,  B01J31/00 ,  B01J31/04 ,  B01J31/30 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15

    Abstract: 1,211,096. Vinyl acetate. FARBENFABRIKEN BAYER A.G. and FARBWERKE HOECHST A.G. 13 Nov., 1967 [12 Nov., 1966; 27 Dec., 1966; 2 March, 1967], No. 51544/67. Heading C2C. Vinyl acetate is prepared by reacting ethylene with acetic acid and oxygen in the gaseous phase at an elevated temperature in the presence of a catalyst containing palladium metal and one or more alkali metal salts, e.g. acetates or compounds which can form alkali metal acetates under the reaction conditions. The process is continuous and a small quantity of one or more alkali metal salts is added continuously or intermittently to one or more of the reactants so that the composition of the palladium carrier catalyst (i.e. noble metal, alkali metal acetate and carrier) is kept constant and optimal. The addition of the alkali metal compound preferably in the form of a solution, to the reactant or reactants may be accomplished by passing the latter partly or entirely in the gaseous form through a solution of alkali metal compound or through layers of solid bodies impregnated with alkali metal compounds.

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