Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (02): 121-125.doi: 10.3866/PKU.WHXB20000206

• ARTICLE • Previous Articles     Next Articles

Textural Characterization of SiO2-AEO Xerogels

Sun Ji-Hong, Wu Dong, Sun Yu-Han, Yang Nian-Hua, Zhou Jian-Wei, Yue Yong   

  1. State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001|State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences Wuhan 430071
  • Received:1999-05-27 Revised:1999-07-23 Published:2000-02-15
  • Contact: Sun Yu-Han


The porous SiO2 xerogels with controlled texture were obtained from TE OS in the presence of AEO by sol gel method. It was found that the addition amount and molecular weight of AEO and ageing time of SiO2 AEO sol could adjust the textural properties of SiO2 xerogels, and AEO in the xerogel had different thermal stability when the SiO2 AEO xerogel being heated under different atmospheres .As a result, It has been found that the SiO2 xerogel showed stronger flexible skeleton, narrower pore distribution, and higher thermal stability after heat treatment.

Key words: AEO, SiO2-AEO, Pore size distribution, TG-DTA