Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol

41.4% yield of xylene was obtained over high-silica hierarchical ZSM-5 catalyst by optimizing reaction conditions of benzene alkylation with methanol. [Display omitted] In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Brönsted acidity and hierarchical porous structure...

Full description

Saved in:
Bibliographic Details
Published in:Chinese chemical letters 2019-03, Vol.30 (3), p.757-761
Main Authors: Rui, Jiayao, Lyu, Jinghui, Hu, Hualei, Zhang, Qunfeng, Wang, Qingtao, Li, Xiaonian
Format: Article
Language:English
Subjects:
Benzene alkylation
Ethylbenzene
Optimization
Xylene
ZSM-5
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:41.4% yield of xylene was obtained over high-silica hierarchical ZSM-5 catalyst by optimizing reaction conditions of benzene alkylation with methanol. [Display omitted] In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Brönsted acidity and hierarchical porous structure was synthesized by sol-gel method for continuously catalytic conversion of benzene alkylation with methanol to xylene. The effects of temperature, pressure, benzene/methanol molar ratio and weight hour space velocity (WHSV) on the catalytic performance of the catalyst were investigated as well. As a result, the high-silica hierarchical porous ZSM-5 showed great performance as the yield of xylene was up to 41.1% under the optimum reaction conditions (500 °C, 0.1 MPa, Mbenzene/Mmethanol = 1:1.5 and WHSV = 4 h−1), while the selectivity to by-product, ethylbenzene, was well suppressed (below 0.1%). In addition, the catalyst structure and properties were characterized by the means of XRD, IR, TPD, SEM, TEM and N2 physical adsorption technologies.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2018.09.016