Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (3): 286-290.

• Articles • Previous Articles     Next Articles

Synthesis and Catalytic Properties of ZSM-5 Zeolite with Alkyl-polyamine Triethylene-tetramine as Directing Agent

WEI Bo1*, SUN Jian-min2, CAO Hui-qun1, LÜ Yu-juan1 and FANG Lin1   

  1. 1. Chemistry and Chemical Engineering College, Shenzhen University, Shenzhen 518060, P. R. China;
    2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2008-01-30 Revised:2008-05-15 Online:2009-05-25 Published:2009-08-07
  • Contact: WEI Bo, E-mail: weibo@szu.edu.cn
  • Supported by:

    Supported by State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of Jilin University and State Key Laboratory of Physical Chemistry of Solid Surfaces of Xiamen University.

Abstract:

With alkyl-polyamine triethylene-tetramine as the structure-directing agent, aluminosilicate zeolite ZSM-5(MFI) crystals were synthesized and characterized by XRD, SEM, FTIR, and TG-DTA. The results indicate that the organic amine has a certain influence on the crystal shape and size. The alkaline condition was in favor of the crystallization of ZSM-5 zeolite in the triethylene-tetramine system. The catalytic activity of as-synthesized crystals was examined for the aqueous hydroxylation of phenol with hydrogen peroxide. The phenol conversion was 13.6%, and the selectivities of the as-synthesized samples for catechol, hydroquinone, and benzoquinone were 66.0%, 23.6%, and 10.4%, respectively. The as-synthesized ZSM-5 sample shows a relatively high selectivity towards catechol and could be a promising catalyst.

Key words: ZSM-5; Triethylene-tetramine; Synthesis; Catalysis