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A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme

Author

Listed:
  • Xing Zhu

    (North Carolina State University
    Kunming University of Science and Technology)

  • Yunfei Gao

    (North Carolina State University)

  • Xijun Wang

    (North Carolina State University)

  • Vasudev Haribal

    (North Carolina State University)

  • Junchen Liu

    (North Carolina State University)

  • Luke M. Neal

    (North Carolina State University)

  • Zhenghong Bao

    (Chemical Science Division and Center for Nanophase Materials Sciences)

  • Zili Wu

    (Chemical Science Division and Center for Nanophase Materials Sciences)

  • Hua Wang

    (Kunming University of Science and Technology)

  • Fanxing Li

    (North Carolina State University)

Abstract

Styrene is an important commodity chemical that is highly energy and CO2 intensive to produce. We report a redox oxidative dehydrogenation (redox-ODH) strategy to efficiently produce styrene. Facilitated by a multifunctional (Ca/Mn)1−xO@KFeO2 core-shell redox catalyst which acts as (i) a heterogeneous catalyst, (ii) an oxygen separation agent, and (iii) a selective hydrogen combustion material, redox-ODH auto-thermally converts ethylbenzene to styrene with up to 97% single-pass conversion and >94% selectivity. This represents a 72% yield increase compared to commercial dehydrogenation on a relative basis, leading to 82% energy savings and 79% CO2 emission reduction. The redox catalyst is composed of a catalytically active KFeO2 shell and a (Ca/Mn)1−xO core for reversible lattice oxygen storage and donation. The lattice oxygen donation from (Ca/Mn)1−xO sacrificially stabilizes Fe3+ in the shell to maintain high catalytic activity and coke resistance. From a practical standpoint, the redox catalyst exhibits excellent long-term performance under industrially compatible conditions.

Suggested Citation

  • Xing Zhu & Yunfei Gao & Xijun Wang & Vasudev Haribal & Junchen Liu & Luke M. Neal & Zhenghong Bao & Zili Wu & Hua Wang & Fanxing Li, 2021. "A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21374-2
    DOI: 10.1038/s41467-021-21374-2
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    Cited by:

    1. Michael High & Clemens F. Patzschke & Liya Zheng & Dewang Zeng & Oriol Gavalda-Diaz & Nan Ding & Ka Ho Horace Chien & Zili Zhang & George E. Wilson & Andrey V. Berenov & Stephen J. Skinner & Kyra L. S, 2022. "Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

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