Raman Spectroscopic Studies of the Phase Transitions in Hexane at High Pressure

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Abstract:

Raman spectroscopic study of n-hexane was carried out in a cubic zirconia anvil cell up to approximately 2.0 GPa. Under high pressure, the C–H stretching region of the spectrum at 2850–3000 cm−1 shows measurable changes in frequency, bandwidth, and intensity. These Raman bands shift towards higher frequencies with increasing pressure. At about 1.4 GPa, phase transition from liquid to solid was induced by compression, as was simultaneously observed with the built-in microscope.

Keywords: N-HEXANE; PHASE TRANSITION; RAMAN SPECTROSCOPY

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370205775142665

Affiliations: Department of Geology, Peking University, Beijing 100871, China

Publication date: December 1, 2005

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