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Instruments / Technical Area	Publication Details	Published	Actions
I20-EDE-Energy Dispersive EXAFS (EDE)	Localized thermal levering events drive spontaneous kinetic oscillations during CO oxidation on Rh/Al2O3 Donato Decarolis , Monik Panchal , Matthew Quesne , Khaled Mohammed , Shaojun Xu , Mark Isaacs , Adam H. Clark , Luke L. Keenan , Takuo Wakisaka , Kohei Kusada , Hiroshi Kitagawa , C. Richard A. Catlow , Emma K. Gibson , Alexandre Goguet , Peter Wells Nature Catalysis 70 DOI: 10.1038/s41929-024-01181-w Diamond Proposal Number(s): [21593] Open Access Show Abstract ▼ Abstract: Unravelling kinetic oscillations, which arise spontaneously during catalysis, has been a challenge for decades but is important not only to understand these complex phenomena but also to achieve increased activity. Here we show, through temporally and spatially resolved operando analysis, that CO oxidation over Rh/Al2O3 involves a series of thermal levering events—CO oxidation, Boudouard reaction and carbon combustion—that drive oscillatory CO2 formation. This catalytic sequence relies on harnessing localized temperature episodes at the nanoparticle level as an efficient means to drive reactions in situations in which the macroscopic conditions are unfavourable for catalysis. This insight provides a new basis for coupling thermal events at the nanoscale for efficient harvesting of energy and enhanced catalyst technologies.	Jul 2024

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