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    Production of supported catalysts for partial oxidation of aromatic hydrocarbons in a fluidized bed
    5.
    发明授权
    Production of supported catalysts for partial oxidation of aromatic hydrocarbons in a fluidized bed 失效
    生产用于在流化床中部分氧化芳香烃的支持催化剂

    公开(公告)号：US3565919A

    公开(公告)日：1971-02-23

    申请号：US3565919D

    申请日：1968-09-06

    Applicant: BASF AG

    Inventor： FRIEDRICHSEN WILHELM ,  GOEHRE OTTO

    IPC: B01J23/22 ,  B01J11/06 ,  B01J11/32

    CPC classification number: B01J23/22

    Abstract: THE PRODUCTION OF A SUPPORTED CATALYST CONTAINING VANADIUM PENTOXIDE AND TITANIUM DIOXIDE FOR THE OXIDATION OF AROMATIC HYDROCARBONS TO CARBOXYLIC ACIDS OR THEIR ANHYDRIDES WITH OXYGEN OR GASES CONTAINING OXYGEN IN A FLUIDIZED BED, BY TREATING AN INERT CARRIER SUBSTANCE WITH A SOLUTION OR SUSPENSION OF A TITANIUM COMPOUND, THEN HEATING IT IN THE PRESENCE OF OXYGEN TO A TEMPERATURE OF 130* TO 1100*C., TREATING THE CARRIER THUS PRETREATED WITH A SOLUTION OR MELT OF A VANADIUM COMPOUND AND HEATING IT IN THE PRESENCE OF OXYGEN AT 350* TO 1100*C.

    Process for the purification of cyclohexanone and homologues thereof
    9.
    发明专利
    Process for the purification of cyclohexanone and homologues thereof 未知

    公开(公告)号：GB1018557A

    公开(公告)日：1966-01-26

    申请号：GB4415162

    申请日：1962-11-22

    Applicant: BASF AG

    Inventor： MUELLER KARL-HEINZ ,  GOEHRE OTTO

    IPC: C07C45/00 ,  C07C45/78 ,  C07C45/82

    Abstract: Cyclohexanone, or a homologue containing 1 or 2 alkyl groups of up to 4 carbon atoms each, obtained by the dehydrogenation of the corresponding cyclohexanol, is freed from unsaturated ketonic impurities by dispersing in the crude cyclohexanone about 0.01-1% by weight of an alkali-metal or alkaline-earth metal compound of alkaline reaction, and distilling the cyclohexanone in the presence of the alkali or alkaline-earth metal compound. Specified compounds of alkaline reaction are alkali and alkaline-earth (other than magnesium) hydroxides, alcoholates of 1-4 carbon atoms, phenolates and naphtholates, and alkali-metal carbonates, a number of suitable compounds being specified. The alkali or alkaline-earth metal compound may be taken as such or formed in situ, e.g. from an oxide, hydride or carbide. Conventional dehydrogenation catalysts may be used for the conversion of the cyclohexanol into cyclohexanone, and a number of suitable catalysts are specified. The dehydrogenation may be carried out in a single stage or in a number of stages, and the cyclohexanol starting material may have been obtained by the hydrogenation of the corresponding phenol, or by the hydrogenation and hydrolysis of aniline, the toluidines, the xylidines or the corresponding nitro compounds, or by the atmospheric oxidation of cyclohexane. The distillation of the cyclohexanone product is preferably effected in at least two stages, the compound of alkaline reaction being added before the first stage or at a later stage. In the first stage low-boiling impurities may be removed at a pressure between 300 mm. and 5 atm., and cyclohexanone then distilled from the residue at a pressure of 1-200 mm. Examples are given of the treatment of (1) methylcyclohexanol, obtained by hydrogenation of cresol, and (2) cyclohexanol, obtained by passing a mixture of aniline, steam and hydrogen over a hydrogenation catalyst.

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