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Digitization of Adsorption Isotherms from "The Thermodynamics and
 Hysteresis of Adsorption''

Sorption isotherms collected from tables in the seminal dissertation, “The
 Thermodynamics and Hysteresis of Adsorption” by A. J. Brown, have been digitized and
 made publicly available, along with supporting software scripts that facilitates usage
 of the data. The isotherms include laboratory measurements of xenon, krypton, and carbon
 dioxide adsorption (and, when possible, desorption) isotherms on a single sample of
 Vycor glass1, at various temperatures including subcritical conditions for xenon and
 krypton. The highlight of this dataset is the collection of “scanning” isotherms for
 xenon on Vycor at 131 K. The scanning isotherms examine numerous trajectories through
 the adsorption-desorption hysteresis region, such as primary adsorption and desorption
 scanning isotherms that terminate at the hysteresis boundary, secondary scanning
 isotherms made by selective reversals that return to the boundary, and closed scanning
 loops. This dataset was originally used to test the independent domain theory of
 adsorption and continues to support successor theories of adsorption/desorption scanning
 hysteresis including more recent theories based on percolation models. Through digital
 preservation and release of the tables from Brown’s dissertation, these data are now
 more easily accessible and can continue to find use in developing models of adsorption
 for fundamental and practical applications.