| 含氟体系中合成高品质的MCM-48介孔分子筛 |
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| 引用本文： | 华德润,陈胜利,周政,陈爱城,李睿.含氟体系中合成高品质的MCM-48介孔分子筛[J].燃料化学学报,2012,40(5):564-568. |
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| 作者姓名： | 华德润 陈胜利 周政 陈爱城 李睿 |
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| 作者单位： | State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China |
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| 摘 要： | 在含氟体系中以正硅酸乙酯和十六烷基溴化铵作为硅源和模板剂,合成高质量的MCM-48。主要考察了各种影响合成MCM-48的因素,得到的产物分别用XRD,TEM和N2吸附-脱附技术进行表征。结果表明,合成高质量MCM-48的条件是温度为393 K,时间为24 h,CTAB/Si比为0.65;得到的MCM-48具有较大的比表面积(130 5 m2/g),孔径分布比较集中(2.416 nm)。
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| 关 键 词： | MCM-48 含氟体系 合成条件 介孔 晶体 |
| 收稿时间： | 2011-10-12 |
Synthesis of mesoporous MCM-48 molecular sieves of high quality in a fluorine-containing system |
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| HUA De-run,CHEN Sheng-li,ZHOU Zheng,CHEN Ai-cheng,LI Rui.Synthesis of mesoporous MCM-48 molecular sieves of high quality in a fluorine-containing system[J].Journal of Fuel Chemistry and Technology,2012,40(5):564-568. |
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| Authors: | HUA De-run CHEN Sheng-li ZHOU Zheng CHEN Ai-cheng LI Rui |
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| Institution: | (State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering,China University of Petroleum,Beijing 102249,China) |
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| Abstract: | Mesoporous MCM-48 molecular sieves were synthesized in a fluorine-containing system using tetraethylorthosilicate(TEOS) as silica source and cetyltrimethylammonium bromide(CTAB) as template.To investigate the influence of various factors for synthesis on the structure and properties of the MCM-48 molecular sieves obtained,they were characterized by X-ray diffraction(XRD),N2 adsorption-desorption and transmission electron microscopy(TEM).The results showed that under the optimal conditions,i.e.a CTAB/Si ratio of 0.65 and crystallization at 393K for 24h,the as-synthesized MCM-48 exhibits high crystallinity with a specific surface area of 1305m2/g and an average pore size of 2.416nm. |
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| Keywords: | MCM-48 fluorine-containing system synthesis condition mesoporous crystallinity |
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