Preparation and characterization of silica gel powders |
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| Authors: | Li Zhongjun Zhao Qinsheng Liu Changrang and Wang Yuntao |
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| Affiliation: | (1) Department of Nonferrous Metallurgy, Central South University of Technology, 410083 Changsha, China;(2) Department of Chemistry, Zhengzhou University, 450052 Zhengzhou, China |
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| Abstract: | Silica gel powders, with particle diameter in the range 10 to 20 nm, were prepared from water glass using ethyl acetate as
a latent acid reagent. The products were characterized by TG-DTA, TEM, FTIR, BET and some other experiment methods. The process
of silica sol-gel formation and the thermal behavior as well as phase change of the silica powders during heat-treating process
were studied, and the effect of heat-treating temperature on the specific surface area and apparent density of the silica
powders was investigated.
Synopsis of the first author Li Zhongjun, associate professor, born in 1963, majoring in coordination chemistry and inorganic material science. |
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| Keywords: | sol-gel process water glass silica gel powder preparation |
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