Preparation and characterization of silicagel from silicate solution obtained by autoclave treatment of copper slag

Silicagel is prepared from sodium silicate solution obtained by alkaline treatment of copper slag; The acid type, the drying mode, and the pH affect the dispersity of the silicagel; Silicagels obtained at low pH have no micropores and the mesopore size distribution is narrow; The silicagel moisture absorption is: high pH, air-dried < high pH, freeze-dried < low pH, air-dried.