Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (10): 1201-1205.doi: 10.3866/PKU.WHXB20061006

• ARTICLE • Previous Articles     Next Articles

Influence of HCl on the Mesostructure and Morphology of the Ordered Mesoporous Silica

ZHAO Chun-Xia;CHEN Wen;LIU Qi;TIAN Gao   

  1. Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
  • Received:2006-03-15 Revised:2006-05-08 Published:2006-10-11
  • Contact: CHEN Wen

Abstract: Ordered mesoporous molecular sieves SBA-15 were synthesized by hydrothermal reaction with TEOS as the source of inorganic silica and tri-block copolymer P123 as the template in strong acid media with HCl. Characteristics of the structure and micro-morphology of the synthesized samples were investigated by means of XRD, SEM, TEM, and N2 adsorption-desorption analysis. The results indicated that HCl played a role of catalyst in the synthesizing process. It could enhance the formation of hexagonal ordered arrangement of the surfactant micelles. HCl could reduce the number of micropores. Apporpriate amount of HCl was favourable to form the thermally stable SBA-15 with the morphology of pearl-like chains.

Key words: Mesoporous silica, HCl, Mesostructure, Morphology