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

Published

December 16, 2021

Author(s)

Daniel Siderius

Abstract

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 glass, 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.

Citation

Journal of Research (NIST JRES) -

Volume

126

NIST Pub Series

Journal of Research (NIST JRES)

Pub Type

NIST Pubs

Download Paper

https://doi.org/10.6028/jres.126.037

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Keywords

adsorption, hysteresis, isotherm, scanning isotherm

Citation

Siderius, D. (2021), Digitization of Adsorption Isotherms from "The Thermodynamics and Hysteresis of Adsorption", Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.126.037, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933359 (Accessed April 24, 2024)