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Maximizing sinusoidal channels of HZSM-5 for high shape-selectivity to p-xylene

Author

Listed:
  • Chuanfu Wang

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Lei Zhang

    (Peking University)

  • Xin Huang

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Yufei Zhu

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Gang (Kevin) Li

    (The University of Melbourne)

  • Qinfen Gu

    (Australian Synchrotron)

  • Jingyun Chen

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Linge Ma

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Xiujie Li

    (Chinese Academy of Sciences)

  • Qihua He

    (Peking University Health Science Centre)

  • Junbo Xu

    (Chinese Academy of Sciences)

  • Qi Sun

    (National Institute of Clean-and-Low-Carbon Energy (NICE))

  • Chuqiao Song

    (Peking University)

  • Mi Peng

    (Peking University)

  • Junliang Sun

    (Peking University)

  • Ding Ma

    (Peking University
    Peking University)

Abstract

The shape-selective catalysis enabled by zeolite micropore’s molecular-sized sieving is an efficient way to reduce the cost of chemical separation in the chemical industry. Although well studied since its discovery, HZSM-5′s shape-selective capability has never been fully exploited due to the co-existence of its different-sized straight channels and sinusoidal channels, which makes the shape-selective p-xylene production from toluene alkylation with the least m-xylene and o-xylene continue to be one of the few industrial challenges in the chemical industry. Rather than modifications which promote zeolite shape-selectivity at the cost of stability and reactivity loss, here inverse Al zoned HZSM-5 with sinusoidal channels predominantly opened to their external surfaces is constructed to maximize the shape-selectivity of HZSM-5 sinusoidal channels and reach > 99 % p-xylene selectivity, while keeping a very high activity and good stability ( > 220 h) in toluene methylation reactions. The strategy shows good prospects for shape-selective control of molecules with tiny differences in size.

Suggested Citation

  • Chuanfu Wang & Lei Zhang & Xin Huang & Yufei Zhu & Gang (Kevin) Li & Qinfen Gu & Jingyun Chen & Linge Ma & Xiujie Li & Qihua He & Junbo Xu & Qi Sun & Chuqiao Song & Mi Peng & Junliang Sun & Ding Ma, 2019. "Maximizing sinusoidal channels of HZSM-5 for high shape-selectivity to p-xylene," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12285-4
    DOI: 10.1038/s41467-019-12285-4
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    Cited by:

    1. Huiqiu Wang & Boyuan Shen & Xiao Chen & Hao Xiong & Hongmei Wang & Wenlong Song & Chaojie Cui & Fei Wei & Weizhong Qian, 2022. "Modulating inherent lewis acidity at the intergrowth interface of mortise-tenon zeolite catalyst," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Lin, Feng & Ma, Yulong & Sun, Yonggang & Song, Zhi & Men, Xiuqin & Wu, Yuhua & Zhu, Yingbo & Gao, Tingting & Zhong, Yudan, 2022. "Selective hydrodeoxygenation of lignin model compound to renewable fuel precursors using two-dimensional nanosheet Ni/HZ5-NS catalyst," Renewable Energy, Elsevier, vol. 189(C), pages 1278-1291.

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