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Near-infrared spectroscopic study of water at high temperatures and pressures
| Title: | Near-infrared spectroscopic study of water at high temperatures and pressures |
| Authors: | Jin, Yusuke Browse this author | | Ikawa, Shun-ichi2 Browse this author |
| Authors(alt): | 井川, 駿一2 |
| Issue Date: | 2003 |
| Publisher: | American Institute of Physics |
| Journal Title: | The Journal of Chemical Physics |
| Volume: | 119 |
| Issue: | 23 |
| Start Page: | 12432 |
| End Page: | 12438 |
| Publisher DOI: | 10.1063/1.1628667 |
| Abstract: | Near-infrared absorption of the OH stretching overtone transition of water has been measured at temperatures and pressures in the ranges of 373–673 K and 20–400 bar, respectively. The absorption profile at 673 K and 400 bar retains a mark of rotational structure, indicating that an appreciable proportion of water molecules can rotate quite freely. The molar absorption intensity decreases linearly with increasing pressure in the low-pressure region. Enthalpy for dimerization has been estimated to be 15±3 kJ/mol from the temperature dependence of the slopes. Plots of the molar absorption intensity against molar concentration are observed to be located on a single curve irrespective of the temperature. This fact indicates that the ratio of hydrogen-bond formation is largely dependent on the molar density only. A good correlation between the molar absorption intensity and the first moments of the band has been found out; this will be useful in the study of aqueous mixtures. |
| Rights: | Copyright © 2003 American Institute of Physics |
| Relation: | http://www.aip.org/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/1396 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 井川 駿一
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