Phase Transformation of A12O3-SiO2-2rO2 Composite Membranes
Membrane separation process,which greatly meets the demand of reducing the environmental pollution in the modern industry,has become one of the most important strategies in the durative low carbon economy development.This paper has studied the transformation structure mechanism of of Al2O3-SiO2-2rO2 composite membrane produced by the sol-gel method on a porous a-Al2O3 support and the effects of Si02 and ZrO2 inγAl2O3 membrane. Porous Al2O3-SiO2-ZTO2 composite membrane of the average pore size 2-4μm was obtained first time through controlling various factors,The structure crystal type and surface state are characterized by means of optical microscope,XRD,SEM,and IR. The results show that the membrane calcined at 1OOO℃ obtain a composition of γ-Al2O3,t-2rO2 and amorphous SiO2. The phase transformation has not appeared when heated at 1200℃. As the thermostability of the modified membrane being improved,the phase transformation temperature in the sintering process could be delayed. Therefore,the membranes properties are greatly improved.
A12O3-SiO2-ZrO2 composite membranes modification thermostability
Wang Qian-ping Tian Xiu-shu Liu Shu-xian Wu Wei-hua Huang Zhuan-hong Zhang Jia-sheng
Full Hebei Polytechnic University,Tangshan 063000,China Shijiazhuang Railway Institute,Shijiazhuang 050043,China
国际会议
Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)
南昌
英文
329-333
2010-04-28（万方平台首次上网日期，不代表论文的发表时间）