Abstract
Using the methods of equilibrium chemical thermodynamics, the influence of the size and initial composition of stratifying organic mixtures in microsized pores on the composition and stability of phases coexisting in a heterogeneous state has been demonstrated. Using a number of binary organic systems as an example, it is shown that, in contrast to macrosized phases, in microsized pores, the mutual solubility of the components substantially depends on the pore size and the initial composition of the mixture, while the nature of the size dependence of solubilities is different for mixtures of different compositions. A thermodynamic interpretation of the results obtained as a consequence of the implementation of various mechanisms to reduce the free energy of the system is presented.
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ACKNOWLEDGMENTS
The authors thank all the participants in the seminar of the Institute of Organometallic Chemistry, Russian Academy of Sciences, held on December 17, 2019, for usefull comments on the work and an interesting discussion.
Funding
This work was carried out as part of a state order to the Institute of Organometallic Chemistry, Russian Academy of Sciences, as well as with the support of the Russian Foundation for Basic Research, projects nos. 18-08-01356-a and 18-43-520034-r_povolzhye_a.
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Shishulin, A.V., Fedoseev, V.B. Features of the Influence of the Initial Composition of Organic Stratifying Mixtures in Microsized Pores on the Mutual Solubility of Components. Tech. Phys. Lett. 46, 938–941 (2020). https://doi.org/10.1134/S1063785020090291
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DOI: https://doi.org/10.1134/S1063785020090291