Open AccessDigitization of Adsorption Isotherms from "The Thermodynamics and Hysteresis of Adsorption''
Author(s) -
Daniel W. Siderius
Publication year - 2021
Publication title -
journal of research of the national institute of standards and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.202
H-Index - 59
eISSN - 2165-7254
pISSN - 1044-677X
DOI - 10.6028/jres.126.037
Subject(s) - hysteresis , adsorption , desorption , krypton , thermodynamics , xenon , materials science , sorption , isothermal process , chemistry , physics , organic chemistry , condensed matter physics
Sorption isotherms collected from tables in the seminal dissertation, “TheThermodynamics and Hysteresis of Adsorption” by A. J. Brown, have been digitized andmade publicly available, along with supporting software scripts that facilitates usageof the data. The isotherms include laboratory measurements of xenon, krypton, and carbondioxide adsorption (and, when possible, desorption) isotherms on a single sample ofVycor glass1, at various temperatures including subcritical conditions for xenon andkrypton. The highlight of this dataset is the collection of “scanning” isotherms forxenon on Vycor at 131 K. The scanning isotherms examine numerous trajectories throughthe adsorption-desorption hysteresis region, such as primary adsorption and desorptionscanning isotherms that terminate at the hysteresis boundary, secondary scanningisotherms made by selective reversals that return to the boundary, and closed scanningloops. This dataset was originally used to test the independent domain theory ofadsorption and continues to support successor theories of adsorption/desorption scanninghysteresis including more recent theories based on percolation models. Through digitalpreservation and release of the tables from Brown’s dissertation, these data are nowmore easily accessible and can continue to find use in developing models of adsorptionfor fundamental and practical applications.