Xenon freezing point

Ripmeester (346) used MAS to study xenon adsorbed on zeolites Na-X and H-mordenite. In the case of faujasite containing excess sorbate, separate lines from liquid, solid, gaseous, and sorbed xenon could be distinguished (see Fig. 67). The presence of a line from adsorbed xenon at 160 K shows that sorbed xenon does not freeze at the bulk xenon melting point. The line from liquid xenon measured at 170 K shifts to high field (Fig. 67b), suggesting that sorbed xenon is more dense than bulk liquid. 

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