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Thermal decomposition of C2H5I on Ag(111)

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Abstract

The decomposition of C2H5I on Ag(111) has been studied using temperature programmed desorption (TPD), work-function change measurements (ΔΦ) and X-ray photoelectron spectroscopy (XPS). Adsorption of C2H5I at 100 K is mostly molecular with little dissociation. C-I bond cleavage starts around 110 K. Below 1 monolayer coverage, all adsorbed C2H5I(a) dissociates to C2H5(a) and I(a) during TPD. C2H5(a) undergoes only recombination, producing gas phase butane (C4H10) around 190 K. No C-H or C-C bond cleavage takes place. On D/Ag(111), hydrogenation of C2H5(a) to C2H5(g) occurs readily between 150 and 220 K.

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Authors and Affiliations

  1. Department of Chemistry, University of Texas, TX 78712, Austin, USA

    X. -L. Zhou & J. M. White

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  1. X. -L. Zhou
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  2. J. M. White
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Zhou, X.L., White, J.M. Thermal decomposition of C2H5I on Ag(111). Catal Lett 2, 375–384 (1989). https://doi.org/10.1007/BF00768180

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  • DOI: https://doi.org/10.1007/BF00768180

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