Local Hydration Pressures in Methanol Aqueous Solution: A Raman Spectroscopy Analysis

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• 作者：Nubia Judith Mendoza ; Laura Jim茅nez Bonales ; Valent铆n Garc铆a Baonza ; Mercedes C谩ceres
• 刊名：Journal of Physical Chemistry B
• 出版年：2014
• 出版时间：August 21, 2014
• 年：2014
• 卷：118
• 期：33
• 页码：9919-9925
• 全文大小：348K
• ISSN：1520-5207

文摘

Raman spectra of methanol鈥搘ater mixtures were measured over the whole composition range at room conditions. The spectra are used to quantify the strength of intermolecular interactions in terms of local internal pressures. The conclusions derived from the spectroscopic analysis are discussed within the framework of the solvation pressure model using values of the cohesion energy density expected in the mixture. This work demonstrates that an appropriate analysis of Raman spectroscopy experiments can be used to quantify the local internal pressures due to intermolecular interactions in liquid mixtures, provided that high pressure results of the pure liquids are available.