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Programmable heating and quenching for efficient thermochemical synthesis

Author

Listed:
  • Qi Dong

    (University of Maryland)

  • Yonggang Yao

    (University of Maryland)

  • Sichao Cheng

    (University of Maryland)

  • Konstantinos Alexopoulos

    (University of Delaware
    The Pennsylvania State University)

  • Jinlong Gao

    (University of Maryland)

  • Sanjana Srinivas

    (University of Delaware)

  • Yifan Wang

    (University of Delaware)

  • Yong Pei

    (University of Maryland)

  • Chaolun Zheng

    (University of Maryland)

  • Alexandra H. Brozena

    (University of Maryland)

  • Hao Zhao

    (Princeton University)

  • Xizheng Wang

    (University of Maryland)

  • Hilal Ezgi Toraman

    (University of Delaware
    The Pennsylvania State University)

  • Bao Yang

    (University of Maryland)

  • Ioannis G. Kevrekidis

    (Johns Hopkins University)

  • Yiguang Ju

    (Princeton University)

  • Dionisios G. Vlachos

    (University of Delaware)

  • Dongxia Liu

    (University of Maryland)

  • Liangbing Hu

    (University of Maryland
    University of Maryland)

Abstract

Conventional thermochemical syntheses by continuous heating under near-equilibrium conditions face critical challenges in improving the synthesis rate, selectivity, catalyst stability and energy efficiency, owing to the lack of temporal control over the reaction temperature and time, and thus the reaction pathways1–3. As an alternative, we present a non-equilibrium, continuous synthesis technique that uses pulsed heating and quenching (for example, 0.02 s on, 1.08 s off) using a programmable electric current to rapidly switch the reaction between high (for example, up to 2,400 K) and low temperatures. The rapid quenching ensures high selectivity and good catalyst stability, as well as lowers the average temperature to reduce the energy cost. Using CH4 pyrolysis as a model reaction, our programmable heating and quenching technique leads to high selectivity to value-added C2 products (>75% versus 100 h using a non-optimized catalyst. This study establishes a new model towards highly efficient non-equilibrium thermochemical synthesis.

Suggested Citation

  • Qi Dong & Yonggang Yao & Sichao Cheng & Konstantinos Alexopoulos & Jinlong Gao & Sanjana Srinivas & Yifan Wang & Yong Pei & Chaolun Zheng & Alexandra H. Brozena & Hao Zhao & Xizheng Wang & Hilal Ezgi , 2022. "Programmable heating and quenching for efficient thermochemical synthesis," Nature, Nature, vol. 605(7910), pages 470-476, May.
    • Handle: RePEc:nat:nature:v:605:y:2022:i:7910:d:10.1038_s41586-022-04568-6
    DOI: 10.1038/s41586-022-04568-6
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    Cited by:

    1. Patrice Perreault & Cristian-Renato Boruntea & Heena Dhawan Yadav & Iria Portela Soliño & Nithin B. Kummamuru, 2023. "Combined Methane Pyrolysis and Solid Carbon Gasification for Electrified CO 2 -Free Hydrogen and Syngas Production," Energies, MDPI, vol. 16(21), pages 1-20, October.
    2. Hanmin Yang & Ilman Nuran Zaini & Ruming Pan & Yanghao Jin & Yazhe Wang & Lengwan Li & José Juan Bolívar Caballero & Ziyi Shi & Yaprak Subasi & Anissa Nurdiawati & Shule Wang & Yazhou Shen & Tianxiang, 2024. "Distributed electrified heating for efficient hydrogen production," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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