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Selective conversion of CO2 to isobutane-enriched C4 alkanes over InZrOx-Beta composite catalyst

Author

Listed:
  • Han Wang

    (Institute of Coal Chemistry, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Sheng Fan

    (Institute of Coal Chemistry, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Shujia Guo

    (Institute of Coal Chemistry, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Sen Wang

    (Institute of Coal Chemistry, Chinese Academy of Sciences)

  • Zhangfeng Qin

    (Institute of Coal Chemistry, Chinese Academy of Sciences)

  • Mei Dong

    (Institute of Coal Chemistry, Chinese Academy of Sciences)

  • Huaqing Zhu

    (Institute of Coal Chemistry, Chinese Academy of Sciences)

  • Weibin Fan

    (Institute of Coal Chemistry, Chinese Academy of Sciences)

  • Jianguo Wang

    (Institute of Coal Chemistry, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Direct conversion of CO2 to a single specific hydrocarbon with high selectivity is extremely attractive but very challenging. Herein, by employing an InZrOx-Beta composite catalyst in the CO2 hydrogenation, a high selectivity of 53.4% to butane is achieved in hydrocarbons (CO free) under 315 °C and 3.0 MPa, at a CO2 conversion of 20.4%. Various characterizations and DFT calculation reveal that the generation of methanol-related intermediates by CO2 hydrogenation is closely related to the surface oxygen vacancies of InZrOx, which can be tuned through modulating the preparation methods. In contrast, the three-dimensional 12-ring channels of H-Beta conduces to forming higher methylbenzenes and methylnaphthalenes containing isopropyl side-chain, which favors the transformation of methanol-related intermediates to butane through alkyl side-chain elimination and subsequent methylation and hydrogenation. Moreover, the catalytic stability of InZrOx-Beta in the CO2 hydrogenation is considerably improved by a surface silica protection strategy which can effectively inhibit the indium migration.

Suggested Citation

  • Han Wang & Sheng Fan & Shujia Guo & Sen Wang & Zhangfeng Qin & Mei Dong & Huaqing Zhu & Weibin Fan & Jianguo Wang, 2023. "Selective conversion of CO2 to isobutane-enriched C4 alkanes over InZrOx-Beta composite catalyst," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38336-5
    DOI: 10.1038/s41467-023-38336-5
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    References listed on IDEAS

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    1. Zhongling Li & Wenlong Wu & Menglin Wang & Yanan Wang & Xinlong Ma & Lei Luo & Yue Chen & Kaiyuan Fan & Yang Pan & Hongliang Li & Jie Zeng, 2022. "Ambient-pressure hydrogenation of CO2 into long-chain olefins," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Youming Ni & Zhiyang Chen & Yi Fu & Yong Liu & Wenliang Zhu & Zhongmin Liu, 2018. "Selective conversion of CO2 and H2 into aromatics," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
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