Issue 27, 2024, Issue in Progress

Conversion of C8 aromatics over a dual-bed catalyst

Abstract

A dual-bed catalyst was prepared for the conversion of C8 aromatics. The upper bed layer consisted of ZSM-5 covered with SiO2, primarily utilized for ethylbenzene dealkylation. By employing tetraethyl orthosilicate (TEOS) as a deposition agent through the chemical liquid deposition (CLD) method, the modified ZSM-5 catalyst exhibited optimal catalytic performance at a TEOS addition of 0.6 g per gram of catalyst. The lower bed layer contained ZSM-39 catalyst, mainly employed for xylene isomerization reaction. ZSM-39 was synthesized using pyrrolidine as the template, and the best catalytic performance was achieved when the OH/SiO2 molar ratio in the synthesis system was 0.05. The mass ratio between the upper and lower agents was maintained at 1 : 1. Compared to traditional single-bed ZSM-5 catalysts, the dual-bed catalyst demonstrated enhanced activity and selectivity.

Graphical abstract: Conversion of C8 aromatics over a dual-bed catalyst

Article information

Article type
Paper
Submitted
25 Apr. 2024
Accepted
04 Jun. 2024
First published
13 Jun. 2024
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2024,14, 19054-19061

Conversion of C8 aromatics over a dual-bed catalyst

P. Feng, C. Kang, Z. Zhou, X. Yue, Z. Liu, Y. Gai, J. Shi and B. Zong, RSC Adv., 2024, 14, 19054 DOI: 10.1039/D4RA03078H

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