Phase transitions in disordered mesoporous solids

Abstract Fluids confined in mesoporous solids exhibit a wide range of physical behavior including rich phase equilibria. While a notable progress in their understanding has been achieved for fluids in materials with geometrically ordered pore systems, mesoporous solids with complex pore geometries s...

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Autores principales:	Daniel Schneider, Daria Kondrashova, Rustem Valiullin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d28d482edc0b4a7a9adfa213d73a8b3b
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spelling	oai:doaj.org-article:d28d482edc0b4a7a9adfa213d73a8b3b2021-12-02T16:06:57ZPhase transitions in disordered mesoporous solids10.1038/s41598-017-07406-22045-2322https://doaj.org/article/d28d482edc0b4a7a9adfa213d73a8b3b2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07406-2https://doaj.org/toc/2045-2322Abstract Fluids confined in mesoporous solids exhibit a wide range of physical behavior including rich phase equilibria. While a notable progress in their understanding has been achieved for fluids in materials with geometrically ordered pore systems, mesoporous solids with complex pore geometries still remain a topic of active research. In this work we study phase transitions occurring in statistically disordered linear chains of pores with different pore sizes. By considering, quite generally, two phase change mechanisms, nucleation and phase growth, occurring simultaneously we obtain the boundary transitions and the scanning curves resulting upon reversing the sign of the evolution of the chemical potential at different points along the main transition branches. The results obtained are found to reproduces the key experimental observations, including the emergence of hysteresis and the scanning behavior. By deriving the serial pore model isotherm we suggest a robust framework for reliable structural analysis of disordered mesoporous solids.Daniel SchneiderDaria KondrashovaRustem ValiullinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daniel Schneider Daria Kondrashova Rustem Valiullin Phase transitions in disordered mesoporous solids
description	Abstract Fluids confined in mesoporous solids exhibit a wide range of physical behavior including rich phase equilibria. While a notable progress in their understanding has been achieved for fluids in materials with geometrically ordered pore systems, mesoporous solids with complex pore geometries still remain a topic of active research. In this work we study phase transitions occurring in statistically disordered linear chains of pores with different pore sizes. By considering, quite generally, two phase change mechanisms, nucleation and phase growth, occurring simultaneously we obtain the boundary transitions and the scanning curves resulting upon reversing the sign of the evolution of the chemical potential at different points along the main transition branches. The results obtained are found to reproduces the key experimental observations, including the emergence of hysteresis and the scanning behavior. By deriving the serial pore model isotherm we suggest a robust framework for reliable structural analysis of disordered mesoporous solids.
format	article
author	Daniel Schneider Daria Kondrashova Rustem Valiullin
author_facet	Daniel Schneider Daria Kondrashova Rustem Valiullin
author_sort	Daniel Schneider
title	Phase transitions in disordered mesoporous solids
title_short	Phase transitions in disordered mesoporous solids
title_full	Phase transitions in disordered mesoporous solids
title_fullStr	Phase transitions in disordered mesoporous solids
title_full_unstemmed	Phase transitions in disordered mesoporous solids
title_sort	phase transitions in disordered mesoporous solids
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/d28d482edc0b4a7a9adfa213d73a8b3b
work_keys_str_mv	AT danielschneider phasetransitionsindisorderedmesoporoussolids AT dariakondrashova phasetransitionsindisorderedmesoporoussolids AT rustemvaliullin phasetransitionsindisorderedmesoporoussolids
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Phase transitions in disordered mesoporous solids

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