Abstract
Thermodynamic and structural characterizations of krypton adsorption at 79 K on (0001) graphite preplated with carbon tetrachloride (CCI 4) have been performed by means of classical volumetric measurements and X-ray diffraction. Krypton condensation results in the compression and partial displacement of the preadsorbed CCl 4 film, and in the growth of three-dimensional CCl 4 crystallites. When less than one CCl 4 monolayer is preadsorbed, krypton adsorption occurs preferentially on the bare part of graphite and the krypton two-dimensional solid undergoes a commensurate-incommensurate transition before CCl 4 displacement. There is no significant indication for the formation of a two-dimensional (krypton-CCl 4) solid solution.
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