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    METHOD FOR THE PREPARATION OF AN AMORPHOUS METAL OXIDE COMPOSITE
    3.
    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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