Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis

Chuang Liu; Yihua Long; Zhengbao Wang

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Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis
- Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis
- 中国化学工程学报（英文版） 2018年26卷第10期页码：2070-2076
- Affiliations：
  
  Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University,Hangzhou,China,310027
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2018
- Accepted：
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Chuang Liu, Yihua Long, Zhengbao Wang. Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis[J]. 中国化学工程学报（英文版）, 2018,26(10):2070-2076.

hydrothermal synthesis[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2070-2076.
Chuang Liu, Yihua Long, Zhengbao Wang. Optimization of conditions for preparation of ZSM-5@silicalite-1 core-shell catalysts via hydrothermal synthesis[J]. 中国化学工程学报（英文版）, 2018,26(10):2070-2076. DOI：

hydrothermal synthesis[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2070-2076. DOI：

摘要

Abstract

Although the preparation of ZSM-5@silicalite-1 (ZS) core-shell catalysts has been reported in the literature

their selectivity to para-xylene (PX) in the toluene alkylation with methanol is difficult to control. Here we present the effects of water and ZSM-5 adding amounts in the synthesis solution

the hydrothermal synthesis time

and the Si/Al ratio of core ZSM-5 on the catalytic performance of ZS core-shell catalysts. The ZS core-shell catalysts were characterized by X-ray diffraction (XRD)

adsorption

and NH

temperature-programmed desorption (NH

-TPD) techniques. The highest PX selectivity of 95.5% was obtained for the ZS (Si/Al=140) catalyst prepared in the synthesis solution with a molar ratio of 0.2TPAOH:1TEOS:250H

O at 175℃ and 10 r·min

-1

for only 2 h and the corresponding toluene conversion is as high as 22.8% for the alkylation of toluene with methanol.

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