Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (5): 872-878.DOI: 10.1016/S1872-2067(17)62828-6

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Synthesis of ZSM-5 monoliths with hierarchical porosity through a steam-assisted crystallization method using sponges as scaffolds

Tiejing Hu, Jian Liu, Changyan Cao, Weiguo Song   

  1. Beijing National Laboratory for Molecular Sciences, Laboratory for Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-02-24 Revised:2017-03-27 Online:2017-05-18 Published:2017-05-10
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21333009) and the Youth Innovation Promotion Association of CAS (2017049).

Abstract:

Self-supporting ZSM-5 crystals with hierarchical porosity were prepared through a steam-assisted crystallization method using sponges as rigid scaffolds. The synthesized materials were characterized by X-ray diffraction, nitrogen sorption, scanning electron microscopy, transmission electron microscopy, solid-state nuclear magnetic resonance spectroscopy and ammonia temperature-programmed desorption. The ZSM-5 monoliths exhibited high crystallinities, hierarchical porous structures and strong acidities. They showed superior catalytic performance in the liquid-phase esterification reaction between benzyl alcohol and hexanoic acid.

Key words: Hierarchically porous structure, Zeolite, Steam-assisted crystallization, Acidity