| 多孔二氧化硅干凝胶的制备及其液相吸附特性研究 |
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| 引用本文： | 沈军,陈睿,倪星元,王博,张志华.多孔二氧化硅干凝胶的制备及其液相吸附特性研究[J].同济大学学报(自然科学版),2013,41(7):1084-1087. |
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| 作者姓名： | 沈军 陈睿 倪星元 王博 张志华 |
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| 作者单位： | 同济大学物理科学与工程学院,上海200092;上海市特殊人工微结构材料与技术重点实验室,上海200092 |
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| 基金项目： | 国家自然科学基金，上海市科学技术委员会纳米专项 |
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| 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450800 m2·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.
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| 关 键 词： | 干凝胶 溶胶-凝胶法 液相吸附 循环性能 |
| 收稿时间： | 2010/4/26 0:00:00 |
| 修稿时间： | 2013/4/22 0:00:00 |
Preparation of silica xerogels and study of their liquid phase absorption properties |
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| shen jun,chen rui,ni xingyuan,wang bo and zhang zhihua.Preparation of silica xerogels and study of their liquid phase absorption properties[J].Journal of Tongji University(Natural Science),2013,41(7):1084-1087. |
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| Authors: | shen jun chen rui ni xingyuan wang bo and zhang zhihua |
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| Institution: | SHEN Jun;CHEN Rui;NI Xingyuan;WANG Wenqin;College of Physics Science and Engineering,Tongji University;Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology; |
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| Abstract: | 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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| Keywords: | xerogels sol gel process liquid absorption cycling performance |
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