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Improved Selectivity toward Light Olefins in the Reaction of Toluene with Methanol Over the Modified HZSM‐5 Catalyst
Author(s) -
Bi Yi,
Wang Yingli,
Wei Yingxu,
He Yanli,
Yu Zhengxi,
Liu Zhongmin,
Xu Lei
Publication year - 2014
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201301072
Subject(s) - selectivity , toluene , catalysis , ethylene , methanol , chemistry , xylene , mesoporous material , photochemistry , induction period , inorganic chemistry , organic chemistry
Abstract Light olefins and para ‐xylene were produced with high selectivity in the reaction of toluene with methanol over a modified HZSM‐5 catalyst. Ordered mesoporous structure and weaker acidic sites led to significant contribution to the selectivity toward para ‐xylene. By means of a single‐pulse reaction and the temperature‐programmed surface reaction, it was confirmed that the presence of toluene and as‐produced xylene shortened the reaction induction period and reduced the formation temperature of ethylene and propylene, which was beneficial to improve the selectivity toward light olefins, particularly ethylene.