Calorimetric measurements of the adsorption heat for ethene on Pt{211} and Pt{311}

Brown, W A, Kose, R and King, D A (1999) Calorimetric measurements of the adsorption heat for ethene on Pt{211} and Pt{311}. Surface Science, 440 (1-2). 271 - 278. ISSN 0039-6028

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Abstract

The sticking probability and heat of adsorption for C2H4 on the stepped Pt(211) and Pt(311)-(1 x 2) surfaces have been measured for the first time. Adsorption on Pt(211) leads to the formation of several different species as a function of coverage, whereas adsorption on Pt(311)-(1 x 2) leads to the formation of only one species on the surface over the whole coverage range. The initial heats of adsorption for C-2,H-4 on Pt(211) and Pt(311)-(1 x 2) have been measured as 180 and 220 kJ mol(-1), respectively. The initial sticking probabilities are 0.84 for both surfaces. The most likely species to be formed on Pt(211) as a function of coverage are quad-a acetylene followed by ethylidyne whereas on Pt(311)-(1 x 2) ethylylidyne forms at all coverages. (C) 1999 Elsevier Science B.V. All rights reserved.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science
Depositing User: Deeptima Massey
Date Deposited: 22 Jul 2014 09:37
Last Modified: 22 Jul 2014 12:27
URI: http://sro.sussex.ac.uk/id/eprint/48661
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