Methane Assisted Chemical Looping Water Splitting Performance of Sr2FeMo0.6Ni0.4O6-δ Double Perovskite for Solar Fuels Production

Andrea Strazzolini; Francesco Orsini; Salvatore Francesco Cannone; Domenico Ferrero; Marta Boaro; Jordi Llorca; Georgios Dimitrakopoulos; Alessandro Trovarelli; Massimo Santarelli; Ahmed Ghoniem

doi:10.52825/solarpaces.v2i.907

Authors

Andrea Strazzolini University of Udine https://orcid.org/0009-0002-5853-3013
Francesco Orsini Polytechnic University of Turin https://orcid.org/0000-0001-6455-7025
Salvatore Francesco Cannone Polytechnic University of Turin https://orcid.org/0000-0002-3605-8701
Domenico Ferrero Polytechnic University of Turin https://orcid.org/0000-0002-4802-0583
Marta Boaro University of Udine https://orcid.org/0000-0002-6853-2965
Jordi Llorca Universitat Politècnica de Catalunya https://orcid.org/0000-0002-7447-9582
Georgios Dimitrakopoulos Massachusetts Institute of Technology https://orcid.org/0000-0001-6636-0517
Alessandro Trovarelli University of Udine https://orcid.org/0000-0002-1396-4031
Massimo Santarelli Polytechnic University of Turin https://orcid.org/0000-0001-6778-3546
Ahmed Ghoniem Massachusetts Institute of Technology https://orcid.org/0000-0001-8730-272X

DOI:

https://doi.org/10.52825/solarpaces.v2i.907

Keywords:

Chemical Looping, Perovskite, Exsolution, Water Splitting, Solar Fuels, CH4 Reforming

Abstract

In this work, we performed a preliminary investigation on the redox behaviour of Sr₂FeMo_0.6Ni_0.4O_6-_δ (SFMN) double perovskite in H₂-H₂O and CH₄-H₂O redox cycles in order to explore the potential use of this oxide as an Oxygen Carrier (OC) in fuel-assisted Chemical Looping Water Splitting (CLWS) processes driven by concentrated solar energy. The results were compared with our previous findings on the Reverse Water Gas Shift Chemical Looping (RWGS-CL) reaction. The improvement in performance due to the bimetallic exsolution on the OC surface is observed. This OC exhibits interesting activity and stability over CH₄-assisted CLWS cycling. Future investigations are planned to examine the structural transformations that might impact the redox behaviour of this material in water splitting processes.

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