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    Process for the preparation of cyclohexanone
    2.
    发明专利
    Process for the preparation of cyclohexanone 未知

    公开(公告)号：DE3203286A1

    公开(公告)日：1982-12-09

    申请号：DE3203286

    申请日：1982-02-01

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： TAKEHIRA KATSUOMI ,  ISHIKAWA TOSHIO ,  HAYAKAWA TAKASHI ,  IMAMURA JUICHI

    IPC: C07C45/34 ,  C07C49/403

    Abstract: The invention provides an effective process for the preparation of cyclohexanone by liquid-phase oxidation of cyclohexene in the presence of a catalyst system. The degree of conversion of cyclohexene and the yield of cyclohexanone are unexpectedly increased if the reaction mixture brought into contact with oxygen or air contains a limited amount of an aliphatic alcohol having 2 to 10 carbon atoms in the molecule, such as, for example, ethyl alcohol, and the catalyst system is composed of a palladium compound, for example PdCl2, and at least one co-catalyst component in the form of a copper compound or an iron compound such as CuCl2 or FeCl3. The benzene or cyclohexane added to the reaction mixture was found to have no adverse effects or even gave improved results in the reaction and provide further advantages for the process, in which the starting cyclohexane need not be purified and can be used as prepared by partial hydrogenation of benzene or partial dehydrogenation of cyclohexane.

    3.
    发明专利
    未知

    公开(公告)号：DE2757031A1

    公开(公告)日：1978-07-06

    申请号：DE2757031

    申请日：1977-12-21

    Applicant: AGENCY IND SCIENCE TECHN ,  SANKO CHEMICAL CO LTD ,  NIPPON SODA CO

    Inventor： IMAMURA JUICHI ,  IWANE YASUO ,  MINAGAWA HIROAKI ,  KIZAWA KAZUHIRO ,  YOSHIMOTO TETSUO

    IPC: C07C43/205 ,  C07C43/275 ,  C07C45/36 ,  C07C47/52 ,  C07C43/20 ,  C07C45/00

    Abstract: A process for the production of alcohols and/or aldehydes which comprises subjecting a toluene derivative having an ether linkage or linkages of the general formula: wherein RO is an ether grouping where R stands for a hydrocarbyl group with 1 DIFFERENCE 20 carbon atoms which may carry an inert substituent or substituents and n stands for an integer of 1 DIFFERENCE 2, to auto-oxidation with molecular oxygen in liquid phase to form the corresponding alcohol and/or aldehyde, characterized in that the reaction is carried out by using a lower saturated fatty acid and/or an anhydride thereof as solvent in the presence of a soluble cobalt salt and a bromine ion-supplying substance at a reaction temperature ranging from 30 DEG C. to 200 DEG C. in such manner that the conversion rate of the toluene derivative does not exceed 90%.

    METHOD FOR THE PREPARATION OF AN AMORPHOUS METAL OXIDE COMPOSITE
    6.
    发明专利
    METHOD FOR THE PREPARATION OF AN AMORPHOUS METAL OXIDE COMPOSITE 未知

    公开(公告)号：CA1251192A

    公开(公告)日：1989-03-14

    申请号：CA490017

    申请日：1985-09-05

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： MIZUKAMI FUJIO ,  NIWA SHUICHI ,  TSUCHIYA TOHRU ,  SHIMIZU KAZUO ,  IMAMURA JUICHI

    IPC: C01G23/00 ,  B01J37/03 ,  C01B13/32 ,  C01B33/12 ,  C01B33/20 ,  C01B35/10 ,  C01F17/00 ,  C01G23/053 ,  C01G25/02 ,  C01G43/025 ,  G01B13/14 ,  B01J37/00

    Abstract: A METHOD FOR THE PREPARATION OF AN AMORPHOUS METAL OXIDE COMPOSITE The invention provides a method for the preparation of a metal oxide composite, e.g. silica-alumina, having high uniformity and porosity in structure. The inventive method comprises forming a homogeneous solution of at least two kinds of oxygen-containing organic metal compounds, e.g. metal alkoxides, in a solvent mixture containing a polar compound having multifunctionality or coordinatively crosslinking power, e.g. hexyleneglycol, together with admixture of water to cause cohydrolysis of the oxygencontaining organic metal compounds so that the homogeneous solution is converted into a sol and then into a gelled coagulum followed by drying and heating the coagulum to dissipate the polar compound. The method is applicable to the preparation of a solid catalyst containing a highly dispersed, catalytically active metal as one of the integral components in the metal oxide composite by the admixture of a readily reducible salt of the catalytically active metal to the solution before hydrolysis and heating the gelled coagulum impregnated with the metal salt in a reducing atmosphere to reduce the salt into the metallic form.

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