What question did this study set out to answer?

To characterize the thermodynamic phase behavior and heat capacity anomalies of krypton physisorbed on graphite in the submonolayer coverage regime.

May 7, 1979Physical Review Letters

Heat Capacity of Krypton Physisorbed on Graphite

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Authors

DBDavid M. Butler490 BioTech (United States)JLJ. A. LitzingerUniversity of Pittsburgh GSG. A. StewartUNSW Sydney

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Implication

Calorimetric analysis reveals a single two-phase coexistence region in submonolayer krypton on graphite, indicating a shared phase structure with adsorbed nitrogen systems.

Key Points

To characterize the thermodynamic phase behavior and heat capacity anomalies of krypton physisorbed on graphite in the submonolayer coverage regime.
Conducted high-precision, exhaustive heat-capacity measurements of krypton films adsorbed onto a graphite substrate (Grafoil).
Mapped thermal anomalies across submonolayer coverages to reconstruct the thermodynamic phase diagram.
Evaluated the quantitative correspondence between the anomaly loci of krypton-graphite and nitrogen-graphite adsorption systems.
Identified a revised phase diagram exhibiting a single two-phase coexistence region, replacing the previously proposed triple-point phase diagram.
Demonstrated quantitative correspondence between heat capacity anomaly trajectories in krypton-graphite and nitrogen-graphite, suggesting a shared phase diagram topology across both adsorbates.

Cite This Study

Butler et al. (1979) studied this question.

synapsesocial.com/papers/6aa04bee21ea5e66decaef53 https://doi.org/10.1103/physrevlett.42.1289

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Implication

Calorimetric analysis reveals a single two-phase coexistence region in submonolayer krypton on graphite, indicating a shared phase structure with adsorbed nitrogen systems.

Heat Capacity of Krypton Physisorbed on Graphite

Discussion

Member takes

Implication

Key Points

Cite This Study

Heat Capacity of Krypton Physisorbed on Graphite

Discussion

Member takes

Implication

Key Points

Cite This Study

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