Characterization of Adsorption Enthalpy of Novel Water-Stable Zeolites and Metal-Organic Frameworks

Scientific Reports
Hyunho KimEvelyn N Wang

Abstract

Water adsorption is becoming increasingly important for many applications including thermal energy storage, desalination, and water harvesting. To develop such applications, it is essential to understand both adsorbent-adsorbate and adsorbate-adsorbate interactions, and also the energy required for adsorption/desorption processes of porous material-adsorbate systems, such as zeolites and metal-organic frameworks (MOFs). In this study, we present a technique to characterize the enthalpy of adsorption/desorption of zeolites and MOF-801 with water as an adsorbate by conducting desorption experiments with conventional differential scanning calorimetry (DSC) and thermogravimetric analyzer (TGA). With this method, the enthalpies of adsorption of previously uncharacterized adsorbents were estimated as a function of both uptake and temperature. Our characterizations indicate that the adsorption enthalpies of type I zeolites can increase to greater than twice the latent heat whereas adsorption enthalpies of MOF-801 are nearly constant for a wide range of vapor uptakes.

References

Feb 12, 2009·Journal of the American Chemical Society·Stefan K HenningerChristoph Janiak
Mar 5, 2014·Journal of the American Chemical Society·Hiroyasu FurukawaOmar M Yaghi
Mar 26, 2014·Journal of the American Chemical Society·Felipe GándaraOmar M Yaghi
May 31, 2014·Chemical Society Reviews·Jérôme CanivetDavid Farrusseng
Jun 10, 2014·Journal of the American Chemical Society·Alejandro M FracaroliOmar M Yaghi
Nov 15, 2014·Microporous and Mesoporous Materials : the Official Journal of the International Zeolite Association·Xiansen LiEvelyn N Wang

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Citations

Jun 26, 2018·Chemical Science·B LianR K Joshi
Jan 3, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Morteza H Bagheri, Scott N Schiffres
Aug 9, 2018·Journal of the American Chemical Society·Jong In ChoiMyoung Soo Lah
May 16, 2020·Chemical Reviews·Xinlei LiuFreek Kapteijn

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Methods Mentioned

BETA
differential scanning calorimetry

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