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In situ formation of ZnOx species for efficient propane dehydrogenation

Author

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  • Dan Zhao

    (China University of Petroleum
    Leibniz-Institut für Katalyse e.V.)

  • Xinxin Tian

    (Leibniz-Institut für Katalyse e.V.
    Institute of Molecular Science, Shanxi University)

  • Dmitry E. Doronkin

    (Karlsruhe Institute of Technology (KIT))

  • Shanlei Han

    (China University of Petroleum
    Leibniz-Institut für Katalyse e.V.)

  • Vita A. Kondratenko

    (Leibniz-Institut für Katalyse e.V.)

  • Jan-Dierk Grunwaldt

    (Karlsruhe Institute of Technology (KIT))

  • Anna Perechodjuk

    (Leibniz-Institut für Katalyse e.V.)

  • Thanh Huyen Vuong

    (Leibniz-Institut für Katalyse e.V.)

  • Jabor Rabeah

    (Leibniz-Institut für Katalyse e.V.)

  • Reinhard Eckelt

    (Leibniz-Institut für Katalyse e.V.)

  • Uwe Rodemerck

    (Leibniz-Institut für Katalyse e.V.)

  • David Linke

    (Leibniz-Institut für Katalyse e.V.)

  • Guiyuan Jiang

    (China University of Petroleum)

  • Haijun Jiao

    (Leibniz-Institut für Katalyse e.V.)

  • Evgenii V. Kondratenko

    (Leibniz-Institut für Katalyse e.V.)

Abstract

Propane dehydrogenation (PDH) to propene is an important alternative to oil-based cracking processes, to produce this industrially important platform chemical1,2. The commercial PDH technologies utilizing Cr-containing (refs. 3,4) or Pt-containing (refs. 5–8) catalysts suffer from the toxicity of Cr(vi) compounds or the need to use ecologically harmful chlorine for catalyst regeneration9. Here, we introduce a method for preparation of environmentally compatible supported catalysts based on commercial ZnO. This metal oxide and a support (zeolite or common metal oxide) are used as a physical mixture or in the form of two layers with ZnO as the upstream layer. Supported ZnOx species are in situ formed through a reaction of support OH groups with Zn atoms generated from ZnO upon reductive treatment above 550 °C. Using different complementary characterization methods, we identify the decisive role of defective OH groups for the formation of active ZnOx species. For benchmarking purposes, the developed ZnO–silicalite-1 and an analogue of commercial K–CrOx/Al2O3 were tested in the same setup under industrially relevant conditions at close propane conversion over about 400 h on propane stream. The developed catalyst reveals about three times higher propene productivity at similar propene selectivity.

Suggested Citation

  • Dan Zhao & Xinxin Tian & Dmitry E. Doronkin & Shanlei Han & Vita A. Kondratenko & Jan-Dierk Grunwaldt & Anna Perechodjuk & Thanh Huyen Vuong & Jabor Rabeah & Reinhard Eckelt & Uwe Rodemerck & David Li, 2021. "In situ formation of ZnOx species for efficient propane dehydrogenation," Nature, Nature, vol. 599(7884), pages 234-238, November.
    • Handle: RePEc:nat:nature:v:599:y:2021:i:7884:d:10.1038_s41586-021-03923-3
    DOI: 10.1038/s41586-021-03923-3
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    Cited by:

    1. Xinlong Ma & Haibin Yin & Zhengtian Pu & Xinyan Zhang & Sunpei Hu & Tao Zhou & Weizhe Gao & Laihao Luo & Hongliang Li & Jie Zeng, 2024. "Propane wet reforming over PtSn nanoparticles on γ-Al2O3 for acetone synthesis," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    2. Chunsong Li & Haochen Zhang & Wenxuan Liu & Lin Sheng & Mu-Jeng Cheng & Bingjun Xu & Guangsheng Luo & Qi Lu, 2024. "Efficient conversion of propane in a microchannel reactor at ambient conditions," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    3. Pingping Wei & Sai Chen & Ran Luo & Guodong Sun & Kexin Wu & Donglong Fu & Zhi-Jian Zhao & Chunlei Pei & Ning Yan & Jinlong Gong, 2024. "Stable and homogeneous intermetallic alloys by atomic gas-migration for propane dehydrogenation," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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