Silica-containing porous bodies of controlled pore size

Abstract From the Canadian patent

Abstract of the Disclosure, This invention relates to the preparation of silicacontaining 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 …