[The study of raman spectra for ethanol under the pressures of 0.1-900 MPa at 24 degrees C].
Experimental measurement and study of Raman spectra for pure ethanol and 50% ethanol aqueous solution has been conducted at ambient temperature and the pressures of 0.1-900 MPa by using Cubic Zirconia anvil cell. The result shows that the frequency of C-H stretch vibration increases with increasing pressure and each of their relation between the frequency and pressure can be expressed as following: for pure ethanol: v1 = 2881.890 + 0.00127 P + 6.213 x 10(-6) P2; V2 = 2928.707 + 0.004 38 P + 4.772 10(-6) p2; v3 = 2973.457 + 0.0089 P + 3.245 x 10(-6) p2; for 50% ethanol aqueous solution: v1 = 2885.616 + 0.010 8 P-2.699 x 10(-6) P2; v2 = 2932.734 + 0.0137 P - 3.346 x 0(-6) p2; v3 = 2978.115 + 0.0165 P - 4.914 x 10(-6) P2. Furthermore, the authors have observed that at the pressure lower than 550 MPa, the strength of hydrogen bonding becomes stronger with increasing pressure.
Yang
Jing-feng
JF
School of Earth and Space Science, Peking University, Beijing 100871, China.
Zheng
Hai-fei
HF
Li
Wen-xia
WX
D000431:Ethanol / Q000737:chemistry*; D006860:Hydrogen Bonding; D008956:Models, Chemical; D011312:Pressure; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013696:Temperature; D014732:Vibration; D014867:Water / Q000737:chemistry*
D014867:Water; D000431:Ethanol