Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (1): 181-188.doi: 10.3866/PKU.WHXB201411174

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

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).

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