物理化学学报 >> 2015, Vol. 31 >> Issue (1): 181-188.doi: 10.3866/PKU.WHXB201411174

催化和表面科学 上一篇    下一篇

单一模板线性多胺一步合成多级孔ZSM-5沸石微球

陈丽, 薛腾, 朱树燕, 王一萌   

  1. 华东师范大学化学系, 上海市绿色化学与化工过程绿色化重点实验室, 上海 200062
  • 收稿日期:2014-09-29 修回日期:2014-11-14 发布日期:2014-12-25
  • 通讯作者: 王一萌 E-mail:ymwang@chem.ecnu.edu.cn
  • 基金资助:

    国家自然科学基金(20890122)和国家科技支撑计划(2012BAE05B02)资助

One-Step Synthesis of Hierarchical ZSM-5 Zeolite Microspheres Using Alkyl-Polyamines as Single Templates

CHEN Li, XUE Teng, ZHU Shu-Yan, WANG Yi-Meng   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, P. R. China
  • Received:2014-09-29 Revised:2014-11-14 Published:2014-12-25
  • Contact: WANG Yi-Meng E-mail:ymwang@chem.ecnu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20890122) and National Key Technology R&D Program of China (2012BAE05B02).

摘要:

线性多胺模板剂(二乙烯三胺(DETA)、三乙烯四胺(TETA)、四乙烯五胺(TEPA))作为单一模板合成了均匀的10-15 μm的多级孔沸石ZSM-5微球. 实验发现, 在水热过程中, 50 nm纳米的沸石晶体粒子自发地堆积成微球, 并且这些微球具有较大的介孔体积, 在傅-克烷基化反应中具有高的催化活性. 同时,我们发现线性多胺起到了模板剂和空隙填充剂的多重功能,这点明显不同于以前我们报道的线性二胺作为模板剂在合成ZSM-5沸石时,主要是起模板剂的作用.

关键词: 多级孔沸石, 聚集体, 单一模板, 线性多胺

Abstract:

Diethylenetriamine (DETA), triethylenetetramine (TETA), and tetraethylenepentamine (TEPA) were used as single templates to synthesize mesoporous zeolite ZSM-5 microspheres. The obtained 10-15 μm hierarchical aggregates had a uniformspherical morphology, which was spontaneously assembled by primary zeolite nanocrystals of 50 nmin size during the hydrothermal synthesis. The ZSM-5 aggregates had a tunable textual porosity, large mesopore volume, and high catalytic activity in the Friedel-Crafts alkylation. Diamine templates only acted as structure directing agents in our previous work. The current alkyl-polyamine templates acted as structure directing agents and space fillers in the synthesis of the hierarchical zeolites.

Key words: Hierarchical zeolite, Aggregate, Single template, Alkyl-polyamine

MSC2000: 

  • O643