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以一种新型Gemini表面活性剂作为介孔模板剂通过转晶过程合成介孔ZSM-5分子筛
引用本文:王全义,魏迎旭,徐舒涛,张默之,孟霜鹤,樊栋,齐越,李金哲,于政锡,袁翠峪,何艳丽,徐庶亮,陈景润,王金棒,苏宝连,刘中民.以一种新型Gemini表面活性剂作为介孔模板剂通过转晶过程合成介孔ZSM-5分子筛[J].催化学报,2014,35(10):1727-1739.
作者姓名:王全义  魏迎旭  徐舒涛  张默之  孟霜鹤  樊栋  齐越  李金哲  于政锡  袁翠峪  何艳丽  徐庶亮  陈景润  王金棒  苏宝连  刘中民
作者单位:a 中国科学院大连化学物理研究所, 洁净能源国家实验室, 辽宁 大连 116023;
b 那慕尔大学无机材料化学实验室, 比利时 那慕尔;
c 武汉理工大学材料复合新技术国家重点实验室, 湖北 武汉 430070;
d 中国科学院大连化学物理研究所, 催化基础国家重点实验室, 辽宁 大连 116023;
e 中国科学院大学, 北京 100049
基金项目:国家自然科学基金(21273230
摘    要:将一种新型Gemini表面活性剂,丙撑基双(十八烷基二甲基氯化铵)C18H37(CH3)2–N+–(CH2)3–N+–(CH3)2C18H37]Cl2(C18-3-18),作为介孔模板剂用于水热法合成介孔ZSM-5分子筛.结果表明,在130 oC低温晶化即可高效合成介孔ZSM-5分子刷.C18-3-18的加入量可影响到所合成介孔ZSM-5分子筛的相对结晶度和织构性质,它的形成遵从一个转晶过程.在合成初期,凝胶中介孔模板剂C18-3-18的使用导向了介孔材料的生成;随后在TPABr的模板作用下,介孔材料慢慢转晶生成具有MFI结构的介孔ZSM-5;然后所合成的介孔ZSM-5晶粒进一步长大并聚集形成块状颗粒,同时产生晶间介孔.C18-3-18作为介孔导向剂不仅可用于合成介孔ZSM-5分子筛,也可用于其它介孔分子筛的合成中.

关 键 词:介孔ZSM-5  双模板法  Gemini型表面活性剂  晶间介孔  转晶过程
收稿时间:2014-04-09

Synthesis of mesoporous ZSM-5 using a new gemini surfactant as a mesoporous directing agent:A crystallization transformation process
Quanyi Wang,Yingxu Wei,Shutao Xu,Mozhi Zhang,Shuanghe Meng,Dong Fan,Yue Qi,Jinzhe Li,Zhengxi Yu,Cuiyu Yuan,Yanli He,Shuliang Xu,Jingrun Chen,Jinbang Wang,Baolian Su,Zhongmin Liu.Synthesis of mesoporous ZSM-5 using a new gemini surfactant as a mesoporous directing agent:A crystallization transformation process[J].Chinese Journal of Catalysis,2014,35(10):1727-1739.
Authors:Quanyi Wang  Yingxu Wei  Shutao Xu  Mozhi Zhang  Shuanghe Meng  Dong Fan  Yue Qi  Jinzhe Li  Zhengxi Yu  Cuiyu Yuan  Yanli He  Shuliang Xu  Jingrun Chen  Jinbang Wang  Baolian Su  Zhongmin Liu
Institution:Quanyi Wang;Yingxu Wei;Shutao Xu;Mozhi Zhang;Shuanghe Meng;Dong Fan;Yue Qi;Jinzhe Li;Zhengxi Yu;Cuiyu Yuan;Yanli He;Shuliang Xu;Jingrun Chen;Jinbang Wang;Baolian Su;Zhongmin Liu;Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences;Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61 rue de Bruxelles,B‐5000 Namur, Belgium;University of Chinese Academy of Sciences;State key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology;State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences;
Abstract:A new gemini surfactant, C18H37(CH3)2-N+-(CH2)3-N+-(CH3)2C18H37]Cl2 (C18-3-18), has been successfully used as the mesopore directing agent in the hydrothermal synthesis of mesoporous ZSM-5 (MZSM-5). The synthesis of MZSM-5 was realized with a low temperature crystallization process at 130 ℃. The amount of C18-3-18 used in the synthesis affected the relative crystallinity and the textural properties of the obtained MZSM-5. Detailed investigation showed that the formation of MZSM-5 followed a crystallization transformation process. The use of C18-3-18 resulted in the formation of mesoporous material during the early stage of the synthesis, which was converted into MZSM-5 crystals templated by tetrapropylammonium bromide to form the MFI phase. As the synthesis proceeded, the MZSM-5 crystals aggregated into particles by weak interactions. This work shows that C18-3-18 can be used as a mesopore directing agent, which could provide a route for the synthesis of other mesoporous zeolites.
Keywords:Mesoporous ZSM-5  Dual-templating  Gemini surfactant  Inter-crystalline mesopore  Crystallization transformation
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