Preparation of silica xerogels and study of their liquid phase absorption properties

Abstract:

With HF as catalyst, nano-porous silica xerogels which have high specific surface area (450—800m2/g) have been directly prepared at ambient pressure. Based on experiments, the influence of stuff proportion and heating temperature has been investigated, and the adsorption capacities of the silica xerogels have been studied by ultraviolet spectrophotometer. The results show that the silica xerogels are suitable for liquid absorption applications.