Determination of the Rh-C bond energy for C2H2 and C2H4 reactive adsorption on Rh{100}

Kose, Rickmer, Brown, Wendy A and King, David A (1999) Determination of the Rh-C bond energy for C2H2 and C2H4 reactive adsorption on Rh{100}. Chemical Physics Letters, 311 (3-4). 109 - 116. ISSN 0009-2614

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Abstract

Coverage dependent heats of adsorption and sticking probabilities for ethylene and acetylene on Rh{100} have been measured. For C2H2 and C2H4, the initial heats of adsorption are 210 +/- 10 and 175 +/- 10 kJ mol(-1), and the initial sticking probabilities are 0.86 +/- 0.01 and 0.88 +/- 0.01, respectively. No literature is available on the adsorption of acetylene on Rh{100}. However, it is known that ethylene adsorption on Rh{100} at 300 K produces sigma-bonded C=CH, and the corresponding Rh-C bond energy is therefore estimated as similar to 268 kJ mol(-1). This is used to determine the species most likely to be formed upon acetylene adsorption. (C) 1999 Elsevier Science B.V. ALI rights reserved.

Item Type: Article
Keywords: Single-crystal surface, thermal-decomposition, electron-defraction, ethylene adsorption, loss spectroscopy, carbon-monoxide,RH(111), acetylene, chemisorption, desorption
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science
Depositing User: Deeptima Massey
Date Deposited: 22 Jul 2014 10:31
Last Modified: 22 Jul 2014 10:31
URI: http://sro.sussex.ac.uk/id/eprint/48684
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