title: The Chemistry of Bulk Hydrogen: Reaction of Hydrogen Embedded in Nickel with Adsorbed CH3.
abstract: Studies in heterogeneous catalysis have long speculated on or have provided indirect evidence for the role of hydrogen embedded in the catalyst bulk as a primary reactant. This report describes experiments carried out under single-collision conditions that document the distinctive reactivity of hydrogen embedded in the bulk of the metal catalyst. Specifically, the bulk H atom is shown to be the reactive species in the hydrogenation of CH(3) adsorbed on Ni(111) to form CH(4), while the H atoms bound to the surface were unreactive. These results unambiguously demonstrate the importance of bulk species to heterogeneous catalytic chemistry.
authors.forename: A D
authors.initials: AD
authors.lastname: Johnson
authors.forename: S P
authors.initials: SP
authors.lastname: Daley
authors.forename: A L
authors.initials: AL
authors.lastname: Utz
authors.forename: S T
authors.initials: ST
authors.lastname: Ceyer