Unlocking the Role of C Doping in a RuO₂ Matrix in CO₂ Methanation from a Combined Theoretical and Experimental Approach.

ABSTRACT: A new type of ruthenium-based catalyst, labeled RuO _x C _y @C, consisting of a combination of metallic ruthenium (Ru⁰), ruthenium oxide (RuO₂), and a ruthenium oxycarbonate phase (RuO₂C _y ) formed by interstitial carbon doped into RuO₂, has been recently reported for low-temperature CO₂ methanation. Its catalytic activity and long-term stability depend on two competing processes that take place under reaction conditions: RuO₂ reduction with H₂ to form inactive Ru⁰ nanoparticles, and C diffusion into RuO₂ to form the active oxycarbonate phase. A combination of experimental and computational techniques is applied in this work to investigate t

SUBMITTER: Royo de Larios A 

PROVIDER: S-EPMC11931542 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature