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- W1982858378 abstract "Many of the individual steps which make up the reaction of carbon and water to produce CO and H2 were studied on a nickel foil surface using temperature-programmed reaction spectroscopy (TPRS), Auger electron spectroscopy (AES), and ultraviolet photoelectron spectroscopy (UPS). Surface graphite and carbide, two metastable surface carbon forms, were prepared by dehydrogeneration of C2H2 and served as reactant carbon. UPS of the graphite monolayer in contact with the metal yielded a valence electronic structure that could be interpreted in terms of the bulk band structure of graphite. The fully carbided Ni surface was active for H2O dissociation with an estimated activation energy ≤ 5 kcal/mol. The reaction of graphitic carbon in contact with the nickel surface and adsorbed oxygen occurs directly without isolated prior breaking of carbon-carbon bonds. The estimated activation energy for the direct reaction was 44 kcal/mol. A different catalytic reaction cycle involving carbon-carbon bond breaking followed by oxidation of the carbide is energetically more demanding. The activation energy for direct carbon-carbon bond breaking was estimated to be between 65 and 70 kcal/mol. Following this demanding step, the reaction between carbidic carbon and oxygen proceeded with estimated activation energy of 31 kcal/mol." @default.
- W1982858378 created "2016-06-24" @default.
- W1982858378 creator A5059299554 @default.
- W1982858378 date "1987-07-01" @default.
- W1982858378 modified "2023-10-17" @default.
- W1982858378 title "The reaction of carbon and water as catalyzed by a nickel surface" @default.
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- W1982858378 doi "https://doi.org/10.1016/0169-4332(87)90142-5" @default.
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