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Updated: May 25, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Discovery of a Robust Ru1-O-Ce Single Atom Catalyst for Coke-Free Dry Reforming of Methane
Jiaqi Si1, Mengtao Huang1,2, Xueling Zhang1
1Anhui Basic Discipline Research Center for Clean Energy and Catalysis, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214002, China.
Abstract:
Dry reforming of methane (DRM) represents a key route for CO2 utilization and methane valorization, yet catalyst coking and sintering under harsh conditions limits its large-scale application. Here, we discover a single-atom catalyst featuring Ru1-O-Ce sites that operates stably for DRM over 600 h at 40-225 L gcat-1 h-1 without detectable coking. Further anchoring Ru1-O-Ce sites on commercial particulate Al2O3 enables 2000-h catalytic stability at 750 °C, with CH4/CO2 conversions approaching thermodynamic equilibrium. Mechanistic studies reveal that Ru1-O-Ce sites partially dissociate methane at Ru1, and CHx species react with nearby O atoms to form CHxO intermediates; CO2 is efficiently activated at formed oxygen vacancies to restore Ru1-O-Ce sites. This bifunctional behavior aligns CH4 and CO2 activation, ensuring coke-free DRM progression and opening new avenues for designing stable, effective single-atom catalysts for methane reforming.
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