title: Energy Transfer Dynamics of Formate Decomposition on Cu(110).
abstract: Energy transfer dynamics of formate (HCOOa) decomposition on a Cu(110) surface has been studied by measuring the angle-resolved intensity and translational energy distributions of CO2emitted from the surface in a steady-state reaction of HCOOH and O2. The angular distribution of CO2shows a sharp collimation with the direction perpendicular to the surface, as represented by cosnθ (n=6). The mean translational energy of CO2is measured to be as low as 100 meV and is independent of the surface temperature (Ts). These results clearly indicate that the decomposition of formate is a thermal non-equilibrium process in which a large amount of energy released by the decomposition reaction of formate is transformed into the internal energies of CO2molecules. The thermal non-equilibrium features observed in the dynamics of formate decomposition support the proposed Eley-Rideal (ER)-type mechanism for formate synthesis on copper catalysts.
authors.affiliation: Graduate school of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan.
authors.forename: Jiamei
authors.initials: J
authors.lastname: Quan
authors.affiliation: Faculty of Pure and Applied Sciences, Tsukuba Research Center for Interdisciplinary Materials Science (TIMS) & Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kondo
authors.affiliation: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, P.R. China.
authors.forename: Guichang
authors.initials: G
authors.lastname: Wang
authors.affiliation: Faculty of Pure and Applied Sciences, Tsukuba Research Center for Interdisciplinary Materials Science (TIMS) & Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan.
authors.forename: Junji
authors.initials: J
authors.lastname: Nakamura
keywords: energy transfer; formate decomposition; surface reaction dynamics; thermal non-equilibrium; translational energy