[Raman spectroscopic studies on methanol under high pressure].
This paper studies Raman spectra of methanol atpressures from 169.2 MPa up to 713.8 MPa and at ambient temperature. The result shows that the spectral profile of stretching vibrational modes of CH and OH gradually changes and Raman shift moves to higher and lower frequency respectively with increasing pressure, which indicates that the energy of C-H bonding increases with pressure, and the influence of hydrogen bonding on O-H function group is greater than that of pressure. In addition, the relative peak area of O-H stretch band decreases with pressure, showing that the total intensity of O-H bonding is weaker compared with C-H bonding.
Qiao
Er-wei
EW
Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Science, Peking University, Beijing 100871, China.
Zheng
Hai-fei
HF
Sun
Qiang
Q
D006860:Hydrogen Bonding; D000432:Methanol / Q000737:chemistry*; D008956:Models, Chemical; D011312:Pressure; D013059:Spectrum Analysis, Raman / Q000379:methods*
D000432:Methanol