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Issue 1, 2014
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One-step synthesis of mesoporous ZSM-11 composites through a dual-template method

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Abstract

Hierarchical porous ZSM-11 composites were hydrothermally synthesized through a one-step route using binary templates of cetyltrimethylammonium tosylate (CTATos) and tetrabutylammonium hydroxide (TBAOH). Influences of aluminum content and crystallization temperature on the morphology and structure were investigated. Powder X-ray diffraction (XRD) and N2 physisorption results show that the mesoporous ZSM-11 composites possess both a considerable mesoporous structure and zeolitic MEL-structure. Moreover, a large amount of aluminum in the gel composition slows the rate of zeolite crystallization, while a high SiO2/Al2O3 ratio is beneficial for the synthesis of mesoporous ZSM-11 without any phase separation. Mesoporous ZSM-11 aluminosilicates were compared to pure ordered mesoporous materials, zeolites and a mechanical mixture of meso and microphases for their catalytic activity in low-density polyethylene (LDPE) pyrolysis. The results suggest that all mesoporous ZSM-11 composites show higher catalytic performance for LDPE cracking.

Graphical abstract: One-step synthesis of mesoporous ZSM-11 composites through a dual-template method

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Article information


Submitted
16 Jul 2013
Accepted
09 Oct 2013
First published
11 Oct 2013

New J. Chem., 2014,38, 308-316
Article type
Paper

One-step synthesis of mesoporous ZSM-11 composites through a dual-template method

H. L. Chen, J. Ding and Y. M. Wang, New J. Chem., 2014, 38, 308
DOI: 10.1039/C3NJ00785E

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