Improved Selectivity toward Light Olefins in the Reaction of Toluene with Methanol Over the Modified HZSM-5 Catalyst

Authors

  • Dr. Yi Bi,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
    2. Graduate University of the Chinese Academy of Sciences, Beijing 100049 (P.R. China)
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  • Yingli Wang,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
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  • Prof. Dr. Yingxu Wei,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
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  • Yanli He,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
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  • Zhengxi Yu,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
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  • Prof. Dr. Zhongmin Liu,

    Corresponding author
    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
    • Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318

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  • Prof. Dr. Lei Xu

    Corresponding author
    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318
    • Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institution, 457 Zhongshan Road, Dalian 116023 (P.R. China), Fax: (+86) 411-8437-9318

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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.

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