| 系列硅铝比纳米薄层ZSM-5分子筛的合成和表征 |
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| 引用本文： | 王务刚,张少龙,张兰兰,王艳,刘晓玲,巩雁军,窦涛.系列硅铝比纳米薄层ZSM-5分子筛的合成和表征[J].物理化学学报,2013,29(9):2035-2040. |
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| 作者姓名： | 王务刚 张少龙 张兰兰 王艳 刘晓玲 巩雁军 窦涛 |
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| 作者单位： | State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation, College of Chemistry Engineering, University of Petroleum-Beijing, Beijing 102249, P. R. China |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2012CB215002);国家自然科学基金(21276278,21176255);中国石油天然气集团公司项目(2011A-2101)资助~~ |
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| 摘 要： | 以自制不对称双子季铵盐表面活性剂为模板, 在水热合成体系中控制合成系列硅铝比纳米薄层ZSM-5分子筛.采用X射线衍射(XRD)、N2吸附-脱附、X射线荧光光谱(XRF)、扫描电镜(SEM)和27Al魔角旋转核磁共振(27Al MAS-NMR)对合成的样品进行了表征. 详细研究了晶化温度、晶化时间、结构导向剂(SDA)用量、碱度等对合成的影响和纳米薄层ZSM-5分子筛的形成过程. 结果表明: 分子筛硅铝比越高, 结构导向剂用量越大, 所需的晶化时间越短; 晶化温度越高, 晶化时间越短; 且不同硅铝比纳米薄层ZSM-5分子筛的形貌规整度、比表面积和介孔/微孔孔容比例随着硅铝比而变化.
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| 关 键 词： | 纳米薄层 ZSM-5分子筛 合成化学 硅铝比 |
| 收稿时间： | 2013-04-25 |
| 修稿时间： | 2013-06-18 |
Synthesis and Characterization of Nanosheet ZSM-5 Zeolites with Different SiO2/Al2O3 Molar Ratios |
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| WANG Wu-Gang;ZHANG Shao-Long;ZHANG Lan-Lan;WANG Yan;LIU Xiao-Ling;GONG Yan-Jun;DOU Tao.Synthesis and Characterization of Nanosheet ZSM-5 Zeolites with Different SiO2/Al2O3 Molar Ratios[J].Acta Physico-Chimica Sinica,2013,29(9):2035-2040. |
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| Authors: | WANG Wu-Gang;ZHANG Shao-Long;ZHANG Lan-Lan;WANG Yan;LIU Xiao-Ling;GONG Yan-Jun;DOU Tao |
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| Institution: | State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation, College of Chemistry Engineering, University of Petroleum-Beijing, Beijing 102249, P. R. China |
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| Abstract: | Nanosheet ZSM-5 zeolites with different SiO2/Al2O3 molar ratios have been hydrothermally synthesized by an organic surfactant with a diquaternary ammoniumgroup. The samples were characterized by X-ray diffraction (XRD), N2 adsorption-desorption, X-ray fluorescence spectroscopy (XRF), scanning electron microscopy (SEM) and 27Al magic angle spinning nuclear magnetic resonance (27Al MAS-NMR) techniques. The synthesis conditions of the nanosheets ZSM-5 were studied, including the synthesis factors such as crystallization temperature and time, the amount of structure-directing agent (SDA) and alkalinity. The results showed that shorter crystallization times were required when synthesis was conducted at higher crystallization temperatures, higher SiO2/Al2O3 ratios, larger amounts of structure-directing agent were used, and higher SiO2/Al2O3 ratios. The morphology, BET and mesopore volume changed with increasing SiO2/Al2O3. |
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| Keywords: | Nanosheet ZSM-5 zeolite Synthetic chemistry 2/Al2O3 ratio' ') SiO2/Al2O3 ratio" target="_blank">">SiO2/Al2O3 ratio |
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