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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c01576
|2 doi
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|a DE-627
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|a eng
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| 100 |
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|a Shimizu, Seishi
|e verfasserin
|4 aut
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| 245 |
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|a Temperature Dependence of Sorption
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 21.09.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Understanding how sorption depends on temperature on a molecular basis has been made difficult by the coexistence of isotherm models, each assuming a different sorption mechanism and the routine application of planar, multilayer sorption models (such as Brunauer-Emmett-Teller (BET) and Guggenheim-Anderson-de Boer (GAB)) beyond their premises. Furthermore, a common observation that adsorption isotherms measured at different temperatures fall onto a single "characteristic curve" when plotted against the adsorption potential has not been given a clear explanation, due to its ambiguous foundation. Extending our recent statistical thermodynamic fluctuation theory of sorption, we have generalized the classical isosteric theory of sorption into a statistical thermodynamic fluctuation theory and clarified how sorption depends on temperature. We have shown that a characteristic curve exists when sorbate number increment contributes purely energetically to the interface, whereas the correlation between sorbate number and entropy drives the temperature dependence of an isotherm. This theory rationalizes the opposite temperature dependence of water vapor sorption on activated carbons with uniform versus broad pore size distributions and can be applied to moisture sorption on starch gels. The adsorption potential is a convenient variable for sorption in its ability to unify sorbate-sorbate fluctuation and the isosteric thermodynamics of sorption
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|a Journal Article
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|a Matubayasi, Nobuyuki
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 37(2021), 37 vom: 21. Sept., Seite 11008-11017
|w (DE-627)NLM098181009
|x 1520-5827
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| 773 |
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|g volume:37
|g year:2021
|g number:37
|g day:21
|g month:09
|g pages:11008-11017
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|u http://dx.doi.org/10.1021/acs.langmuir.1c01576
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|d 37
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