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    Improvements in the production of cycloaliphatic alcohols and ketones by oxidation of cyclo-aliphatic hydrocarbons
    1.
    发明专利
    Improvements in the production of cycloaliphatic alcohols and ketones by oxidation of cyclo-aliphatic hydrocarbons 未知

    公开(公告)号：GB849134A

    公开(公告)日：1960-09-21

    申请号：GB2599858

    申请日：1958-08-13

    Applicant: BASF AG

    Inventor： SIMON WALTER ,  WALDMANN HANS JOACHIM ,  GOEHRE OTTO

    Abstract: In a process for the production of cycloaliphatic alcohols and ketones, by the oxidation of cycloaliphatic hydrocarbons in the liquid phase with oxygen or oxygen-containing gases in a plurality of successive oxidation-vessels, the oxidation-mixture from the last vessel is washed with fresh water to remove monobasic acids formed during the oxidation, the washing-water is separated from the oxidation-mixture, the washing-water is then used, wholly or partly, for washing the intermediate oxidation-mixture from each of the preceding oxidation-stages, and the final oxidation-mixture is submitted to distillation, for the separation of the unreacted cycloaliphatic hydro-carbon and the individual oxidation products. The oxidation-mixture is preferably washed with aqueous alkali hydroxide or carbonate solution before the distillation. Organic acids can be recovered from the washing-water and from the aqueous alkaline solution. The process may be used for the oxidation of cyclohexane in order to produce cyclohexanone and cyclohexanol; it may also be used for the oxidation of methyl-cyclohexane and cyclooctane. The oxidation is advantageously carried out at a temperature of 130 DEG -150 DEG C., a pressure of 3 to 30 atm., and in the presence of an oxidation-catalyst, such as cobalt naphthenate. The gaseous and vaporous constituents of the intermediate oxidation-mixtures are preferably subjected to water-washing together with the liquid constituents; the gaseous streams are then combined and cooled to recover unreacted cycloaliphatic hydrocarbon. The gaseous stream is finally washed with the liquid oxidationproduct, i.e., the final oxidation-mixture from which the unchanged hydrocarbon has been removed by distillation. Specification 776,803 is referred to.

    Improvements in the hydrogenation of nitrogenous carbon compounds
    4.
    发明专利
    Improvements in the hydrogenation of nitrogenous carbon compounds 未知

    公开(公告)号：GB894751A

    公开(公告)日：1962-04-26

    申请号：GB922360

    申请日：1960-03-16

    Applicant: BASF AG

    Inventor： SUESSENGUTH HERMANN ,  MEIER HERMANN ,  CORR HUBERT ,  SIMON 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.

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