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Raman Spectroscopy of Water-Ethanol Solutions: the Estimation of Hydrogen Bonding Energy and the Appearance of Clathrate-like Structures in Solutionsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 сентября 2018 г.
- Авторы: Dolenko Tatiana A., Burikov Sergey A., Dolenko Sergey A., Efitorov Alexander O., Plastinin Ivan V., Yuzhakov Victor I., Patsaeva Svetlana V.
- Журнал: The Journal of Physical Chemistry A: Molecules, Clusters, and Aerosols
- Том: 119
- Номер: 44
- Год издания: 2015
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 10806
- Последняя страница: 10815
- DOI: 10.1021/acs.jpca.5b06678
- Аннотация: The structure of aqueous alcohol solutions at the molecular level for many decades remains an intriguing topic in numerous theoretical and practical investigations. The aberrant thermodynamic properties of water-alcohol mixtures are believed to be caused by the differences in energy of hydrogen bonding between water-water, alcohol-alcohol and alcohol-water molecules. We present the Raman scattering spectra of water, ethanol and water-ethanol solutions with 20 and 70 vol % of ethanol thoroughly measured and analyzed at temperatures varying from -10°C to +70°C. Application of the MCR-ALS method allowed for each spectrum to extract contributions of molecules with different strength of hydrogen bonding. The energy (enthalpy) of formation/weakening of hydrogen bonds was calculated using the slope of Van’t Hoff plot. The energy of hydrogen bonding in 20 vol % of ethanol was found the highest among all the samples. This finding further supports appearance of clathrate-like structures in water-ethanol solutions with concentration around 20 vol % of ethanol.
- Добавил в систему: Пацаева Светлана Викторовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Raman_Spectroscopy_of_Water_Ethanol_Solutions_2015.pdf | 1,4 МБ | 2 ноября 2015 [spatsaeva] |