Table 2. CuPT Loading and Gelation Time of Silica Aerogels^a.

	CuPT loading		gelation time
sample name	(wt %)	(vol %)	(min)
SA	0	0	15
C50SA	50	5	25
C65SA	65	10	45
C75SA	75	15	17
C80SA	80	20	35

^aThe gelation time is a visual measure of the point in time at which the viscosity of the solution increases steeply (seen as gelation).