| 溶胶-凝胶法合成硅溶胶包覆型均分散纳米β分子筛 |
| Sol-Gel Synthesis of Nano-zeolite β/Silicon Sol Composite |
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| 摘要: 在系统考察铝源、反应体系硅铝比、钠离子、反应温度等对分子筛粒度影响的基础上，优化合成条件合成出了粒径为100 nm左右的β分子筛。利用XRD和TEM对所合成样品进行了表征。采用溶胶凝胶法研究了硅溶胶包覆的均分散纳米β分子筛复合材料的合成，结果表明合成产物为纳米β分子筛均匀分散于硅溶胶基质中的微孔-介孔双孔复合材料。 |
| 关键词: 溶胶-凝胶法 β分子筛 复合材料 |
| 基金项目: |
| Abstract: The effect of SiO2/Al2O3 ratio(w/w), sodium ion and crystallizing temperature on the zeolite size was investigated. Pure and highly crystalline zeolite beta at a size about 100 nm was synthesized by hydrothermal method and characterized by XRD and TEM. The colloidal properties of zeolite nanocrystals and silicon sol were studied and then nano-sized composites of zeolite beta/silicon sol was synthesized by the sol-gel method. The TEM and low temperature nitrogen adsorption-desorption results show that the nanocrystals of zeolite beta are finely dispersed on the surface of silicon oxide, and the sample is meso-microporous composite. |
| Keywords: sol-gel zeolite β composite material |
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| 冯锡兰,柳云骐,刘晨光.溶胶-凝胶法合成硅溶胶包覆型均分散纳米β分子筛[J].无机化学学报,2008,24(11):1846-1851. |
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