PREPARATION OF POROUS HIGH-DISPERSION METALLIC CATALYST

• Main Authors: NISHIKAWA EIICHIROU, UENO AKISHI, KANAI YUUKI, IMAI KAZUHIRO, FUJITA KATSUTAMI
• Format: Patent
• Language: English
• Published: 22.06.1989
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE:To prepare a porous high-dispersion metallic catalyst without forming alkoxide of catalytic metal by dissolving salt of catalytic metal, alkoxysilane and/or aluminum alkoxide in a solvent and subjecting this soln. to hydrolytic treatment and thereafter heating it. CONSTITUTION:In the preparation of a porous supporting catalyst in which catalytic metal is highly dispersed on silica and/or alumina and carried thereon, salt of catalytic metal such as silver and gold and alkoxysilane and/or aluminum alkoxide are used. A, uniform soln. is obtained by dissolving them into a mixed solvent consisting of water and monovalent alcohol such as methanol. Thereafter this metallic alkoxide is subjected to hydrolytic treatment under heating and allowed to gel and then the solvent is dispersed and removed by heating. By such a way, a porous high-dispersion catalyst in which catalytic metal is carried on silica and/or alumina is produced at low cost without forming alkoxide of catalytic metal.