Affordable Access

Publisher Website

On the translationally activated dissociative chemisorption of hydrogen and deuterium at a nickel (111) surface

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
146
Identifiers
DOI: 10.1016/0009-2614(88)87434-7

Abstract

Abstract A statistical model has been developed which accurately describes the dependence of the sticking probability at normal incidence ( S n) on translational energy ( E t) for H 2 and D 2 on a Ni(111) surface according to the equation S n = CE t −1 ( E t- E 0) 2, where E 0 (the threshold energy) and C are constants which are equal to 0.85 kJ mol −1 and 0.02 mol kJ −1, respectively. This result is consistent with a “freely” rotating transition state complex. For a surface temperature T s of 1143 K the model yields an angularly independent mean energy of desorption of 3.09 kT s, which is in reasonable agreement with the experimental result of 2.9 kT s.

There are no comments yet on this publication. Be the first to share your thoughts.