期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 393, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2023.123463
关键词
Symmetric mixtures; Slit-like pores; Phase transitions; Monte Carlo simulation
This study investigates the behavior of symmetric binary mixtures confined between attractive planes using Monte Carlo simulation methods in the grand canonical ensemble. The effects of high negative geometric and energetic non-additivity on the phase behavior of mixtures in nanoscopic slit-like pores have been elucidated. It has been shown that the confinement considerably influences the phase behavior, with phase separation being suppressed in narrow pores and qualitatively the same as in bulk systems in wide pores.
Using Monte Carlo simulation methods in the grand canonical ensemble, we have studied the behavior of symmetric binary mixtures confined between attractive planes. We have elucidated the effects of high negative geometric and energetic non-additivity on the phase behavior of mixtures in nanoscopic slit-like pores. In such systems, the geometric non-additivity favors mixing, while the energetic non-additivity favors the formation demixed dense phases. It has been shown that the confinement considerably influences the phase behavior. In particular, phase separation has been found to be suppressed in narrow pores, while in wide pores the phase behavior becomes qualitatively the same as in bulk systems. It has also been demonstrated that the demixed solid is stable over a certain temperature range in pores, while the bulk mixtures characterized by the same non-additivity exhibit only the presence of mixed solid.
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