DOI: 10.1039/A701071K
(Paper)
J. Chem. Soc., Faraday Trans., 1997, 93, 3201-3208
X-Ray diffraction from layers of n-alkanes adsorbed on graphite
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Philippe Espeau, Philip A. Reynolds, Trevor Dowling, David Cookson and John W. White
Abstract
The structure of 1 to 80 layers of C16H34 and C17H36n-alkanes adsorbed on graphite has been studied as a function of temperature using synchrotron X-ray radiation. The measurements confirm that a surface phase of two to four layers, distinct from the bulk adsorbed on the graphite, is formed at room temperature. The structure of the subsequent layers, for a particular hydrocarbon, is not appreciably affected by the number of layers. Warren-like peaks are observed for the adsorbed phase and can be indexed in a centred oblique two-dimensional lattice.