Textural properties of SiO_2.CaO.P_2O_5 glasses prepared by the sol-gel method

摘要

Five glasses in th system SiO_2.CaO.P_2O_5 have been synthesised via sol-gel method. The textural properties of the calcined glasses have been studied using mercury intrusion and N_2 adsorption porosimetries. The glasses with higher SiO_2 content showed lower pore volume, smaller diameters in the meso- and macropore regions, and higher surface areas. The pore morphology in the mesopore range was influenced by the SiO_2 content, where there was a transition from ink bottle to cylinder shaped pores.