title: The reactivity of CO₂ and H₂ at trapped electron sites at an oxide surface.
abstract: We investigate the reactivity to H2 of a chemisorbed CO2 species at electron traps on oxide surfaces, taking the single electron F(+) oxygen vacancy of the MgO(100) terrace as a model system. We find that multiple hydrogen addition steps form three interacting catalytic cycles, leading to the evolution of formaldehyde, methanol or methane. Our results have general implications for the reactivity of CO2 on metal oxides.
authors.affiliation: Department of Chemistry, University College London, Gower Street, London WC1E 6BT, UK. christopher.downing.10@ucl.ac.uk.
authors.forename: C A
authors.initials: CA
authors.lastname: Downing
authors.forename: A A
authors.initials: AA
authors.lastname: Sokol
authors.forename: C R A
authors.initials: CR
authors.lastname: Catlow