The effect of microscopic phenomena on the performance of iron-based oxygen carriers of chemical looping hydrogen production

Fabio Blaschke*, Marjan Bele, Brigitte Bitschnau, Viktor Hacker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The scope of this work was to investigate and understand the microscopic effects on the performance of the active catalytic system in the chemical looping process. The inhibiting and accelerating effects of the different materials have been extensively studied. The ZrO2 doped with MgO and Y2O3 showed a chemical inertness and the formation of a porous morphology for an enhanced cyclic stability. Testing in large-scale application indicates that supporting material with higher yttrium content in ZrO2 has an excellent performance for 100 cycles. The HT-XRD and DSC analyzes clearly show microscopic phenomena play a fundamental role in the process and correspond to the phase transition. Stabilization of the cubic/tetragonal crystal structure leads to suppression of the phase transition and exhibits highest activity. The work reveals new fundamental principles for the design of OC in chemical looping hydrogen and understanding the influence of microscopic effects on the stability of oxygen carriers.
Original languageEnglish
Article number122434
JournalApplied Catalysis B
Volume327
Issue number15 June 2023
Early online date4 Feb 2023
DOIs
Publication statusPublished - 15 Jun 2023

Keywords

  • Chemical looping hydrogen
  • Hydrogen production
  • Microscopic phenomena
  • Oxygen carrier
  • Steam-iron process

ASJC Scopus subject areas

  • General Environmental Science
  • Process Chemistry and Technology
  • Catalysis

Fields of Expertise

  • Advanced Materials Science
  • Mobility & Production

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