Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate

腾晖; 王军; 任晓乾; 陈德民

doi:10.1016/S1004-9541(11)60168-7

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Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate

Updated：2026-01-06

- Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate
- Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate
- 中国化学工程学报（英文版） 2011年19卷第2期页码：292-298
- Affiliations：
  
  State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineer-ing, Nanjing University of Technology,Nanjing,China,210009
- Author bio：
- Funds：
  
  Supported by the Key Natural Science Foundation for Universities of Jiangsu Province(06KJA53012);the National Natural Science Foundation of China(20776069,20976084)
- DOI：10.1016/S1004-9541(11)60168-7
  中图分类号：
- 纸质出版：2011
- Accepted：
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腾晖, 王军, 任晓乾, 等. Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate[J]. 中国化学工程学报（英文版）, 2011,19(2):292-298.

TENG Hui, WANG Jun, REN Xiaoqian, CHEN Demin. Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate[J]. , 2011, 19(2): 292-298.
腾晖, 王军, 任晓乾, 等. Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate[J]. 中国化学工程学报（英文版）, 2011,19(2):292-298. DOI： 10.1016/S1004-9541(11)60168-7.

TENG Hui, WANG Jun, REN Xiaoqian, CHEN Demin. Disproportionation of Toluene by Modified ZSM-5 Zeolite Catalysts with High Shape-selectivity Prepared Using Chemical Liquid Deposition with Tetraethyl Orthosilicate[J]. , 2011, 19(2): 292-298. DOI： 10.1016/S1004-9541(11)60168-7.

摘要

Abstract

Shape-selective catalysts for the disproportionation of toluene were prepared by the modification of the cylinder-shaped ZSM-5 zeolite extrudates with chemical liquid deposition with TEOS (tetraethyl orthosilicate).Various parameters for preparing catalysts were changed to investigate the suitable conditions.The resulting cata-lysts were tested in a pressured fixed bed reactor and characterized by SEM (scanning electron microscopy).The conversion of toluene and

para-xylene

selectivity were influenced remarkably by the

(SiO

(Al

) ratio of ZSM-5 zeolite

the type and amount of deposition agent

acid and solvent used

and the time and cycle of deposition treatment.TEOS was proved to be a more efficient agent than the conventional polysiloxanes when the deposition amount was low.The catalyst prepared at the suitable conditions exhibited a high

para-xylene

selectivity of 91.1% with considerable high conversion of 25.6%.SEM analyses confirmed the formation of a layer of amorphous silica on the external surface of ZSM-5 zeolie crystals

which was responsible for the highly enhanced shape-selectivity.

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