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摘要:
Using the industrialized reagent poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer surfactant (P123) as a template and zirconium oxychloride (ZrOCl2) as the zirconium source, ZrO2 mesoporous materials were synthesized in aqueous solution by the sol-gel method using a material skeleton without the addition of SO42- (or PO43-). The materials obtained had a high specific surface area (156 m2/g), narrow pore size distribution and adjustable pore diameter. The results indicate that the introduction of acetyl acetone is disadvantageous in synthesizing ZrO2 mesoporous materials, and will result in the destruction of the mesoporous structure. By changing the aging times and dissolving temperatures, the pore sizes and channel architectures could be adjusted, but the excess stirring temperature could not cause the formation of a porous structure. With the increase of calcining temperatures, the diameter of pores increases and the specific surface area decreases. However, the channel shapes hardly change and retain a mesoporous structure.
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来源 :
Journal of the Chinese Ceramic Society
ISSN: 0454-5648
年份: 2005
期: 9
卷: 33
页码: 1081-1084,1099