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A Use-Store-Reuse (USR) Concept in Catalytic HCOOH Dehydrogenation: Case-Study of a Ru-Based Catalytic System for Long-Term USR under Ambient O 2

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  • Marinos Theodorakopoulos

    (Laboratory of Biomimetic Catalysis and Hybrid Materials, Department of Chemistry, University of Ioannina, GR45110 Ioannina, Greece)

  • Maria Solakidou

    (Laboratory of Physical Chemistry of Materials and Environment, Department of Physics, University of Ioannina, GR45110 Ioannina, Greece)

  • Yiannis Deligiannakis

    (Laboratory of Physical Chemistry of Materials and Environment, Department of Physics, University of Ioannina, GR45110 Ioannina, Greece
    Institute of Environment & Sustainable Development, University Research Center of Ioannina, GR45110 Ioannina, Greece)

  • Maria Louloudi

    (Laboratory of Biomimetic Catalysis and Hybrid Materials, Department of Chemistry, University of Ioannina, GR45110 Ioannina, Greece
    Institute of Environment & Sustainable Development, University Research Center of Ioannina, GR45110 Ioannina, Greece)

Abstract

Commercial use of H 2 production catalysts requires a repeated use/stop/store and reuse of the catalyst. Ideally, this cycle should be possible under ambient O 2 . Herein we exemplify the concept of Use-Store-Reuse (USR) of a (Ru-phosphine) catalyst in a biphasic catalytic system, for H 2 production via dehydrogenation of HCOOH. The catalytic system can operate uninterrupted for at least four weeks, including storage and reuse cycles, with negligible loss of its catalytic efficiency. The catalytic system consisted of a RuP(CH 2 CH 2 PPh 2 ) 3 (i.e. RuPP3) in ( tri -glyme/water) system, using KOH as a cocatalyst, to promote HCOOH deprotonation. In a USR cycle of 1 week, followed by storage for three weeks under ambient air and reuse, the system achieved in total TONs > 90,000 and TOFs > 4000 h −1 . Thus, for the first time, a USR concept with a readily available stable ruthenium catalyst is presented, operating without any protection from O 2 or light, and able to retain its catalytic performance.

Suggested Citation

  • Marinos Theodorakopoulos & Maria Solakidou & Yiannis Deligiannakis & Maria Louloudi, 2021. "A Use-Store-Reuse (USR) Concept in Catalytic HCOOH Dehydrogenation: Case-Study of a Ru-Based Catalytic System for Long-Term USR under Ambient O 2," Energies, MDPI, vol. 14(2), pages 1-10, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:2:p:481-:d:482201
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    References listed on IDEAS

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    1. Panagiota Stathi & Maria Solakidou & Maria Louloudi & Yiannis Deligiannakis, 2020. "From Homogeneous to Heterogenized Molecular Catalysts for H 2 Production by Formic Acid Dehydrogenation: Mechanistic Aspects, Role of Additives, and Co-Catalysts," Energies, MDPI, vol. 13(3), pages 1-25, February.
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    Cited by:

    1. Maria Solakidou & Aikaterini Gemenetzi & Georgia Koutsikou & Marinos Theodorakopoulos & Yiannis Deligiannakis & Maria Louloudi, 2023. "Cost Efficiency Analysis of H 2 Production from Formic Acid by Molecular Catalysts," Energies, MDPI, vol. 16(4), pages 1-36, February.
    2. Joakim Andersson, 2021. "Application of Liquid Hydrogen Carriers in Hydrogen Steelmaking," Energies, MDPI, vol. 14(5), pages 1-26, March.
    3. Maria Solakidou & Yiannis Georgiou & Yiannis Deligiannakis, 2021. "Double-Nozzle Flame Spray Pyrolysis as a Potent Technology to Engineer Noble Metal-TiO 2 Nanophotocatalysts for Efficient H 2 Production," Energies, MDPI, vol. 14(4), pages 1-16, February.

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