Date of Award
Union College Only
Bachelor of Science
Silicic acid gels result from practically any sol of hydrated silica, merely with the lapse of time. The gel must, however, contain a large enough concentration of silica to give sufficient strength or rigidity for the gel to set. A sol which contains less than .5 percent SiO2 will give a very weak gel, or no gel at all. Sols which are strongly alkaline will not set at all.
Sheffer, Howard, "The Relation between the Concentration of Silica and Time of Set at Constant pH" (1939). Honors Theses. 2169.