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    5.
    发明专利
    未知

    公开(公告)号：DE1085165B

    公开(公告)日：1960-07-14

    申请号：DEB0052521

    申请日：1959-03-18

    Applicant: BASF AG

    Inventor： SUESSENGUTH DR HERMANN ,  MEIER DR HERMANN ,  CORR DR HUBERT ,  SIMON DR WALTER

    IPC: B01J23/34 ,  B01J23/50 ,  B01J23/70 ,  B01J37/08 ,  B01J37/14 ,  B01J37/18 ,  C07C209/36 ,  C07C209/48 ,  C07C209/72 ,  C07C241/02

    Abstract: A process for the hydrogenation of aromatic amino compounds and acyclic and carbocyclic compounds containing nitrogenous groups reducible to amino groups, wherein a hydrogenation of an aromatic ring to give a cycloaliphatic ring and a reduction of a nitrogenous group to give an amino group is achieved, comprises carrying out the hydrogenation in the absence of sulphur at a temperature between 40 DEG C. and 250 DEG C. under a pressure between 20 and 600 atmospheres in the liquid phase in the presence of at least one metal hydrogenation catalyst, the catalytic activity of which is impaired by sulphur, the catalyst having been sintered prior to the hydrogenation. The catalyst may contain, for example, silver, manganese, copper, iron, cobalt or nickel and may be prepared by sintering the oxide at 800 DEG C.-1,400 DEG C. and heating the sintered oxide with hydrogen at 250 DEG C.-600 DEG C. The catalyst may be supported on a carrier and promotors may be added. Aromatic amines may be hydrogenated at 200 DEG C.-250 DEG C. to give cycloaliphatic amines and other nitrogenous compounds containing, for example, nitro, nitroso, isonitroso and cyano groups may be hydrogenated at 60 DEG C.-150 DEG C. to give amino compounds. Other substituents such as aldehyde groups which are reduced and carboxylic, halogen, amino and alkoxy groups which are not reduced may also be present in the reactants. A list of suitable reactants is given. In the examples, ethylene diamine, cyclohexylamine, tolylene diamine, dimethyl hydrazine and isopropylamine are prepared.ALSO:Oxides of silver, manganese, copper, iron, cobalt or nickel are converted to the metal by sintering the oxide by heating for example, to a temperature within 20-60 DEG C. of the melting point and reducing the sintered oxide with a stream of hydrogen. Mixtures of metal oxides may be reduced after sintering to give alloys and in examples alloys of cobalt and aluminium and cobalt, nickel and aluminium are prepared.

    6.
    发明专利
    未知

    公开(公告)号：DE1258401B

    公开(公告)日：1968-01-11

    申请号：DEB0084839

    申请日：1965-12-04

    Applicant: BASF AG

    Inventor： JOCKERS DR KURT ,  MEIER DR HERMANN ,  TAGLINGER DR LUDWIG

    IPC: C01B21/24

    Abstract: 1,159,399. Nitric oxide. BADISCHE ANILIN- & SODA-FABRIK A.G. 2 Dec., 1966 [4 Dec., 1965]. No. 54079/66. Heading C1A. Nitric oxide is produced by reacting sulphur with aqueous nitric acid at an HNO 3 ; S molar ratio of at least 4 : 3 in a reactor at 350- 650‹ C. The sulphur may be supplied to the reactor in vapour or liquid form, in the latter case by spraying, and the nitric acid in vapour form. The nitric acid used may have a concentration of 30-70 wt. per cent. At an HNO 3 : S molar ratio of 4 : 3 the principal by-product is SO 2 , and at 6 : 3 or more it is H 2 SO 4 . In the latter case, nitric oxide of 99% purity and pure dilute sulphuric acid may be obtained by passing the hot reaction gases to a distillation column, separately condensing out the sulphuric acid and any excess nitric acid present, and freeing the NO from other nitrogen oxides by washing with e.g. caustic soda solution.

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