【摘要】 在24℃和0.1~900MPa压力下测量了含50%水的乙醇溶液和纯乙醇的激光拉曼光谱。研究结果表明,纯乙醇和50%乙醇溶液中的C—H基团振动波数均随压力的增大而增大,它们的各振动峰与压力的关系分别为:纯乙醇:ν1=2881.890+0.00127P+6.213×10-6P2;ν2=2928.707+0.00438P+4.772×10-6P2;ν3=2973.457+0.00889P+3.245×10-6P2;50%乙醇溶液:ν1=2885.616+0.0108P-2.699×10-6P2;ν2=2932.734+0.0137P-3.346×10-6P2;ν3=2978.115+0.0165P-4.914×10-6P2。另外,还观察到在低于550MPa压力范围,50%乙醇溶液中的氢键强度随压力的增大而明显增加,550MPa以上压力时不再随压力而发生变化。更多还原

【Abstract】 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: ν₁=2 881.890+0.001 27 P+6.213×10^-6 P²; ν₂=2 928.707+0.004 38 P+4.772×10^-6 P²; ν₃=2973.457+0.008 89 P+3.245×10^-6 P²; for 50% ethanol aqueous solution: ν₁ =2 885.616+0.010 8 P-2.699×10^-6 P²; ν₂ =2 932.734+0.013 7 P-3.346×10^-6 P²; ν₃ =2 978.115+0.016 5 P-4.914×10^-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.更多还原