Abstract
CuAlO2 has received a wealth of interdependent research associated with hydrogen-based catalysis in the chemical industry. Herein, Fe-doped CuAlO2 is demonstrated to reduce the redox temperature for delafossite CuAlO2. Time-resolved X-ray absorption spectroscopy and hydrogen temperature-programmed reduction were used to characterize the redox properties, respectively. Delafossite CuAlO2, with and without Fe doping at 10 at% (CuAl0.9Fe0.1O2), was synthesized via a one-step solid-state reaction method. The results demonstrate that the redox temperature can be reduced by ~ 60 K for the 10 at% Fe-doped catalyst. The findings of this contribution offer a new approach to circumvent the high temperatures associated with the redox processes, and furthermore, offer a design basis for the development of new catalyst systems with enhanced regeneration abilities.
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This work is supported by the King Mongkut’s Institute of Technology Ladkrabang, Thailand.
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Daichakomphu, N., Sakulkalavek, A. & Sakdanuphab, R. Effects of iron doping on the oxidation/reduction properties of delafossite CuAlO2 synthesized via a solid-state reaction. J Mater Sci: Mater Electron 31, 9481–9485 (2020). https://doi.org/10.1007/s10854-020-03488-3
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DOI: https://doi.org/10.1007/s10854-020-03488-3