Abstract
A heat of immersion study has been conducted on a highly microporous polyvinylidene chloride (PVDC) carbon. The effect of chain length on the heat of immersion has been investigated for a series of n-alkanes and n-alkanols. By measuring the heat of immersion of the carbon in hexane, as a function of precoverage with hexane, it has been demonstrated that the heat of immersion is a direct measure of the net heat of adsorption. The surface of the carbon appeared to be reasonably uniform with a net heat of adsorption of 10.25 kcal · mole −1. Using a series of branched chain hydrocarbons, as molecular probes, it was observed that the carbon had an almost uniform pore size with entrances between 5 Å and 6 Å in width.
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