106.
    发明专利
    未知

    公开(公告)号:DE19850300A1

    公开(公告)日:2000-05-04

    申请号:DE19850300

    申请日:1998-10-30

    Applicant: BASF AG

    Abstract: The invention relates to a method for the production of alcohols by vapor phase hydrogenation of carboxylic acids having formula R-COOH, wherein R represents aliphatic, cycloaliphatic, aromatic or heterocyclic radicals or the esters thereof at a high temperature and pressure in the presence of catalysts containing as hydrogenating components oxides of the elements of the fourth main group and/or sub-groups or consisting thereof, wherein hydrogenation is carried out without adding alcohols that are suitable as hydrogen carriers at temperatures ranging from 250 DEG C to 400 DEG C and pressures in the range of 25 bar to 60 bar.

    Improved method for producing hexamethylene diamine

    公开(公告)号:AU5736099A

    公开(公告)日:2000-03-21

    申请号:AU5736099

    申请日:1999-08-17

    Applicant: BASF AG

    Abstract: A process for catalytic hydrogenation of adiponitrile to hexamethylenediamine at elevated temperature and elevated pressure in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent comprisesa) hydrogenating adiponitrile at from 70 to 220° C. and from 100 to 400 bar in the presence of catalysts based on elemental iron as catalytically active component and ammonia as solvent to obtain a mixture comprising adiponitrile,6-aminocapronitrile, hexamethylenediamine and high boilers until the sum total of the 6-aminocapronitrile concentration and the adiponitrile concentration is within the range from 1 to 50% by weight, based on the ammonia-free hydrogenation mixture,b) removing ammonia from the hydrogenation effluent,c) removing hexamethylenediamine from the remaining mixture,d) separating 6-aminocapronitrile and adiponitrile from high boilers individually or together, ande) returning 6-aminocapronitrile, adiponitrile or mixtures thereof into step a).

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