G - Physics – 01 – B
Patent
G - Physics
01
B
252/39, 252/1.G
G01B 13/14 (2006.01) B01J 37/00 (2006.01) B01J 37/03 (2006.01) C01B 13/32 (2006.01)
Patent
CA 1251192
- 28 - ABSTRACT OF THE DISCLOSURE 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 oxygen- containing 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.
490017
Fujio Mizukami
Imamura Juichi
Niwa Shuichi
Shimizu Kazuo
Tsuchiya Tohru
Director-General Of The Agency Of Industrial Science And Technol
Kirby Eades Gale Baker
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