Silica-containing porous bodies of controlled pore size

Details Silica-containing porous bodies of controlled pore size Silica-containing porous bodies of controlled pore size

B - Operations, Transporting

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B01J 35/10 (2006.01) B01J 21/08 (2006.01) B01J 37/06 (2006.01) C04B 28/24 (2006.01)

Patent

CA 1059975

SILICA-CONTAINING POROUS BODIES OF CONTROLLED PORE SIZE Abstract of the Disclosure This invention relates to the preparation of silica- containing particulate materials and monolithic structures exhibiting high porosity with exceptionally uniform pore size. The bodies are produced through gelation of aqueous alkali metal silicate and/or colloidal silica solutions, optionally contain- ing dispersed particulate phases, with organic reagents followed by a leaching step. Uniformity of pore size is achieved through careful control of such variables as the ratio of alkali metal silicate to colloidal silica solutions, the concentration of silica, the amount of dispersed phase employed, and the like. Hence, for example, a porous silicate body having very closely- controlled, small-sized pores would be eminently suitable for such applications as catalyst supports for air pollution control, filtration devices for gases and/or liquids, acoustical materials, and chromatographic supports.

206974

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