Synthesis and catalytic properties of ZSM-5 zeolite with hierarchical pores prepared in the presence of n-hexyltrimethylammonium bromide

Bai, Peng, Wu, Pingping, Xing, Wei, Liu, Daolan, Zhao, Lianming, Wang, Youhe, Xu, Benjing, Yan, Zifeng and Zhao, Xiu Song (2015) Synthesis and catalytic properties of ZSM-5 zeolite with hierarchical pores prepared in the presence of n-hexyltrimethylammonium bromide. Journal of Materials Chemistry A, 3 36: 18586-18597. doi:10.1039/c5ta05350a


Author Bai, Peng
Wu, Pingping
Xing, Wei
Liu, Daolan
Zhao, Lianming
Wang, Youhe
Xu, Benjing
Yan, Zifeng
Zhao, Xiu Song
Title Synthesis and catalytic properties of ZSM-5 zeolite with hierarchical pores prepared in the presence of n-hexyltrimethylammonium bromide
Journal name Journal of Materials Chemistry A   Check publisher's open access policy
ISSN 2050-7496
2050-7496
Publication date 2015-08-05
Year available 2015
Sub-type Article (original research)
DOI 10.1039/c5ta05350a
Open Access Status DOI
Volume 3
Issue 36
Start page 18586
End page 18597
Total pages 12
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Subject 1600 Chemistry
2105 Renewable Energy, Sustainability and the Environment
2500 Materials Science
Abstract ZSM-5 samples with hierarchical pores (macropores, mesopores and micropores) were synthesized in the presence of n-hexyltrimethylammonium bromide (HTAB) and tetrapropylammonium hydroxide (TPAOH). The effect of synthesis conditions including the Si/Al ratio, crystallization temperature and time, and the amount of HTAB added to the synthesis system on the final products was examined. The catalytic properties of the hierarchical zeolite were investigated in reactions of Claisen-Schmidt condensation of benzaldehyde and acetophenone, self-condensation of cyclohexanone and methanol conversion. The hierarchical zeolite exhibits superior catalytic performance in Claisen-Schmidt condensation of benzaldehyde and acetophenone and self-condensation of cyclohexanone and has a remarkably high selectivity for dimethyl ether in the methanol conversion reaction at relatively low temperatures, which was attributed to the fast mass transport in the three-dimensional hierarchical pore network. A cooperative assembly mechanism accounting for the formation of the hierarchical zeolite was proposed based on experimental results.
Formatted abstract
ZSM-5 samples with hierarchical pores (macropores, mesopores and micropores) were synthesized in the presence of n-hexyltrimethylammonium bromide (HTAB) and tetrapropylammonium hydroxide (TPAOH). The effect of synthesis conditions including the Si/Al ratio, crystallization temperature and time, and the amount of HTAB added to the synthesis system on the final products was examined. The catalytic properties of the hierarchical zeolite were investigated in reactions of Claisen–Schmidt condensation of benzaldehyde and acetophenone, self-condensation of cyclohexanone and methanol conversion. The hierarchical zeolite exhibits superior catalytic performance in Claisen–Schmidt condensation of benzaldehyde and acetophenone and self-condensation of cyclohexanone and has a remarkably high selectivity for dimethyl ether in the methanol conversion reaction at relatively low temperatures, which was attributed to the fast mass transport in the three-dimensional hierarchical pore network. A cooperative assembly mechanism accounting for the formation of the hierarchical zeolite was proposed based on experimental results.
Keyword Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Energy & Fuels
Materials Science
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 21206195
U1362202
14CX02050A
ZR2012BM014
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
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