corner
corner

Phys. Rev. Lett. 82, 5156–5159 (1999)

Dynamics of the Dissociative Adsorption of Methane on Pt{110}(1×2)

Download: PDF (108 kB) Buy this article Export: BibTeX or EndNote (RIS)

A. V. Walker and D. A. King
Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom

Received 16 July 1998; published in the issue dated 21 June 1999

An exhaustive molecular beam study of methane dissociation on Pt{110}(1×2) provides a new data base for modeling this process. Major new features include a sharp rise in dissociative sticking probability, s0, with increasing translational energy, Et, corresponding to a barrier of 238 meV, a dramatic increase in s0 at higher Et with increasing vibrational energy, and a significant rise in s0 as Et is lowered below 100meV. It is concluded that the low energy process is a distinctive steering-assisted direct adsorption pathway.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.5156
DOI:
10.1103/PhysRevLett.82.5156
PACS:
82.65.Jv, 79.20.Rf, 82.65.My