Publication: Deformation of Microporous Carbon Adsorbent Sorbonorit-4 during Methane Adsorption
Дата
2022
Авторы
Shkolin, A. V.
Men'Shchikov, I. E.
Khozina, E. V.
Yakovlev, V. Y.
Simonov, V. N.
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Аннотация
© The temperature- and methane adsorption-induced deformations of microporous activated carbon Sorbonorit-4 were measured by in situ dilatometry over a wide range of temperatures and pressures. The thermal expansion coefficient of Sorbonorit-4 in vacuum increased linearly with temperature within a range of 293-573 K. Methane adsorption in Sorbonorit-4 induced its contraction at low pressures and temperatures or expansion at high temperatures throughout the entire pressure range. An inversion of the temperature dependence of adsorption-induced strain (AIS) of Sorbonorit-4 was found. At low pressures and temperatures below 300 K, the AIS isotherm showed a contraction of Sorbonorit-4; its magnitude and corresponding pressure interval decreased with temperature. At T > 300 K, the temperature rise was accompanied by an adsorption-induced expansion of Sorbonorit-4 up to 0.08% at 393 K. At high pressures, the expansion decreased from 0.45 to 0.13% when the temperature increased from 213 to 393 K. The AIS of Sorbonorit-4 and differential isosteric heat of adsorption presented as functions of methane uptake changed within the same intervals of adsorption values, reflecting variations in the state of adsorbed molecules determined by contributions from the adsorbate-adsorbent and adsorbate-adsorbate interactions. The obtained results are essential for practical use of carbon adsorbents for natural gas storage.
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Deformation of Microporous Carbon Adsorbent Sorbonorit-4 during Methane Adsorption / Shkolin, A.V. [et al.] // Journal of Chemical and Engineering Data. - 2022. - 10.1021/acs.jced.1c00904
URI
https://www.doi.org/10.1021/acs.jced.1c00904
https://www.scopus.com/record/display.uri?eid=2-s2.0-85128570922&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/29030
https://www.scopus.com/record/display.uri?eid=2-s2.0-85128570922&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000897004000001
https://openrepository.mephi.ru/handle/123456789/29030