Hydrogen Production and Storage by Oxidation and Reduction of Iron-based Oxygen Carriers

Sebastian Bock, Robert Zacharias, Richard Schauperl, Jürgen Rechberger, Florian von Hofen, Gernot Voitic, Uwe Strohmeyer, Viktor Hacker

Research output: Chapter in Book/Report/Conference proceedingConference paper


The fixed-bed chemical-looping hydrogen (CLH) process offers the possibility of decentralised small-scale hydrogen production and storage from local available renewable hydrocarbon sources like biogas. The detailed process simulation indicated the ability of converting a broad range of different bio-based feedstocks into hydrogen.
Experiments for hydrogen production in a lab-scale reactor showed the ability to release high-pressurized hydrogen with up to 50 bar from the fixed-bed production system without an additional gas compression step. Hydrogen with a purity up to 99.999% was produced in the performed lab-scale experiments to meet the stringent requirements for FCEVs. Detailed process simulations for combined loading and unloading of the oxygen carrier with a typical biogas feedstock are presented. The thermodynamic analyses revealed a high influence of the reformer synthesis gas composition and also of the internal recirculation on the overall process efficiency.
The previously loaded oxygen carrier is appropriate as process-integrated storage solution to cover fluctuating demands during the day i.e. for use in fuel stations. A long-term storage and distribution is possible due to the easy handling and the very high volumetric storage capacity compared to conventional tube trailer transportation.
Original languageEnglish
Title of host publicationProceedings of 7th Transport Research Arena TRA 2018
Publication statusPublished - Apr 2018


  • Hydrogen production
  • Hydrogen Storage
  • Energy conversion
  • chemical looping

Fields of Expertise

  • Mobility & Production


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