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October 2, 2025Energy & Fuels

Ethylbenzene Production via Benzene Alkylation: Tailoring Diffusion and Acidity in ZSM-5 Zeolite Nanosheets

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Authors

JZJiaxing ZhangKYKexin YangAZAjuan Zhou

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Overview

Experimental study demonstrates enhanced catalytic reactivity and suppressed side reactions in benzene alkylation, indicating effective catalyst design via tailored nanosheet morphology and acidity.

Key Points

  • To elucidate the structure–acidity–activity relationships of ZSM-5 zeolite nanosheets and engineer an efficient catalyst for benzene alkylation with dilute ethylene.
  • Synthesized ZSM-5 zeolite nanosheets featuring shortened b-axis thickness, varied Si/Al ratios, and framework iron incorporation.
  • Conducted physiochemical characterization to measure straight channel length, specific surface area, mesopore volume, and acid site strength distributions.
  • Evaluated catalytic activity, diffusion kinetics, and side-reaction selectivity during the alkylation of benzene with dilute ethylene.
  • Shortened straight channels, larger surface areas, and increased mesopore volumes facilitated reactant and product diffusion, improving acid site utilization and reducing coke deposition.
  • Adjusting Si/Al ratios and introducing framework iron optimized acid site density and weakened strong acid sites, strongly suppressing ethylbenzene isomerization, cracking, and polyalkylation.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/6aa2a3f974fc654bd032399dhttps://doi.org/10.1021/acs.energyfuels.5c03402
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