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中文摘要：
以氢氟酸（HF）为催化剂，采用直接常压干燥法制备比表面积为450-800m^2·g^-1。的多孔SiO2干凝胶,在此基础上研究了原料配比和热处理温度对干凝胶的影响，并对制得的SiO2干凝胶的吸附性能进行了研究．研究表明，SiO2干凝胶具有良好的吸附性能以及循环性能，是一种良好的液相吸附材料．
英文摘要：
With HF as catalyst, nano-porous silica xerogels of high specific surface area （450-800 m2 · g-1 ） was directly prepared at ambient pressure. Based on experiments, the influence of stuff proportion and heating temperature was investigated, and the adsorption capacities of the silica xerogels were studied by ultraviolet spectrophotometer. The results show that the silica xerogels with nano-porous structure have good adsorption properties and cycling performance, which are suitable for liquid absorption applications.
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