The Chemistry of Bulk Hydrogen: Reaction of Hydrogen Embedded in Nickel with Adsorbed CH 3
- 10 July 1992
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 257 (5067) , 223-225
- https://doi.org/10.1126/science.257.5067.223
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 CH3 adsorbed on Ni(111) to form CH4, while the H atoms bound to the surface were unreactive. These results unambiguously demonstrate the importance of bulk species to heterogeneous catalytic chemistry.Keywords
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