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Thermal Desorption Study Of Formic Acid Decomposition On A Clean Cu(110) Surface

D. H. Ying, J. Robert
Published 1980 · Chemistry

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The catalytic decomposition of formic acid was studied on a (110)-oriented copper single-crystal surface. Dehydrogenation of formic acid was the sole decomposition path observed. The parent molecule dissociated to form a stable formate species (HCOO(a)) as the surface intermediate. It was postulated that the formate species was bonded to the surface copper sites through the two oxygen atoms. The decomposition of the formate species was the rate-limiting step governing the rates of the formation of the CO2 and H2 products. The rate constant was determined to be 9.4 × 1013exp(−31,870RT) sec−1. A comparison of the catalytic properties of the Cu(110) surface with those of the carburized Ni(110) surface showed strong chemical similarities between the two surfaces.
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