| SiO_2含量对氧化铁基Fe_2O_3-SiO_2二元复合干凝胶性能的影响 |
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| 引用本文： | 高坤,罗运军,李国平,王鲁,陈人杰,李念珂.SiO_2含量对氧化铁基Fe_2O_3-SiO_2二元复合干凝胶性能的影响[J].材料研究学报,2011(5):464-468. |
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| 作者姓名： | 高坤 罗运军 李国平 王鲁 陈人杰 李念珂 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金10876004;爆炸科学与技术国家重点实验室基金YBKT11-01资助项目~~ |
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| 摘 要： | 以水合氯化铁和正硅酸乙酯为前驱物,通过溶胶-凝胶法制备不同SiO_2含量的氧化铁基Fe_2O_3-SiO_2二元复合凝胶,利用冷冻干燥法对凝胶进行干燥得到复合干凝胶。分别采用BET、IR和SEM对复合凝胶的比表面积、孔结构、红外吸收峰和表面形貌进行分析。结果表明,复合凝胶的比表面积和孔体积随着SiO_2含量的增加而增加...
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| 关 键 词： | 复合材料 复合凝胶 比表面积 溶胶-凝胶法 孔结构 |
Effect of SiO2 Addition on the Properties of Fe2O3-SiO2 Binary Composite Xerogels |
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| GAO Kun LUO Yunjun LI Guoping WANG Lu CHEN Renjie LI Nianke.Effect of SiO2 Addition on the Properties of Fe2O3-SiO2 Binary Composite Xerogels[J].Chinese Journal of Materials Research,2011(5):464-468. |
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| Authors: | GAO Kun LUO Yunjun LI Guoping WANG Lu CHEN Renjie LI Nianke |
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| Affiliation: | GAO Kun LUO Yunjun(**) LI Guoping WANG Lu CHEN Renjie LI Nianke (State Key Laboratory of Prevention and Control of Explosion Disasters, Beijing Institute of Technology,Beijing 100081) |
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| Abstract: | The iron oxide-based Fe2O3-SiO2 binary composite xerogels were prepared by sol-gel and freeze-drying method using FeCl3·6H2O and TEOS as precursors.The pore structure and specific surface area of the binary xerogels were investigated by means of nitrogen adsorption experiments,FT-IR spectroscopy and SEM.The results show that the specific surface area and the pore volume increase with the silica content,which is caused by Fe-O-Si bonds formed in the binary xerogels.The addition of SiO2 improves the specific area and pore structure of the binary composite xerogels.These will provide a basis for their application in the nano-thermite. |
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| Keywords: | composites composite gel specific surface area sol-gel pore structure |
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