| 碳气凝胶的制备及结构 |
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| 引用本文： | 郭志军,朱红,张新卫.碳气凝胶的制备及结构[J].北方交通大学学报,2010(6):103-106. |
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| 作者姓名： | 郭志军 朱红 张新卫 |
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| 作者单位： | [1]北京交通大学理学院,北京100044 [2]北京化工大学理学院,北京100029 |
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| 基金项目： | 国家自然科学基金资助项目（50674006） 国家自然科学基金重点项目资助（20636060）; 国际科技合作项目资助（2006DFA61240） |
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| 摘 要： | 以甲醛和间苯二酚溶胶凝胶制备有机气凝胶（OA）,将有机气凝胶在半密封的情况下干燥,再在高温下碳化,制备得到碳气凝胶（CA）,并分析了有机气凝胶的形成机理.通过红外（IR）、透射电镜（TEM）、X射线衍射（XRD）等考察了有机气凝胶到碳气凝胶的结构变化,从具有丰富的官能团结构的有机物,最后碳化得到具有纳米尺度、无序的、连续三维网络结构的碳材料.
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| 关 键 词： | 溶胶-凝胶 有机气凝胶 碳气凝胶 碳化 |
Preparation and Structural Changes of Carbon Aerogels |
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| GUO Zhijun,ZHU Hong,ZHANG Xinwei.Preparation and Structural Changes of Carbon Aerogels[J].Journal of Northern Jiaotong University,2010(6):103-106. |
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| Authors: | GUO Zhijun ZHU Hong ZHANG Xinwei |
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| Institution: | 1.School of Science,Beijing Jiaotong University,Beijing 100044,China;2.School of Science,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | In this work,organic aerogels were prepared by sol-gel polycondensation of resorcinol and formaldehyde using sodium carbonate as a catalyst and dried under a semi-sealed condition at ambient pressure.Carbon aerogels were obtained by the dried organic aerogels carbonized under a nitrogen atmosphere at high temperature.The forming mechanism of organic aerogels has been analyzed.The structures of the organic aerogels and the carbon aerogels obtained were investigated by FT-infrared spectroscopy,X-ray diffraction（XRD）and transmission electron microscopy.The results showed the carbon aerogels have typical three-dimensional continuous disorder nano-network. |
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| Keywords: | sol-gel organic aerogels carbon aerogels carbonization |
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