Raman Spectroscopic Studies of Methane—Ethane Mixtures as a Function of Pressure
Raman Spectroscopic Studies of Methane—Ethane Mixtures as a Function of Pressure
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DOI：
10.1366/0003702011952442
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发表时间：
2001-06
影响因子：
3.5
通讯作者：
S. B. Hansen;R. W. Berg;E. Stenby
中科院分区：
文献类型：
--
作者：
S. B. Hansen;R. W. Berg;E. Stenby
在0.1至15.3 MPaA（绝对压力）范围内，获得了甲烷和甲烷-乙烷混合物（100、85和49摩尔%CH 4）的拉曼光谱与压力的函数关系。对于这些混合物甲烷V1（对称C-H伸缩）带的位置作为压力的函数，对于纯甲烷，它们与以前的结果一致。关于含乙烷混合物的甲烷v1带位置的新数据显然取决于振动甲烷分子周围的分子种类。v1带位置随压力的增加而减小;依赖性越强，乙烷含量越高。乙烷v1带的位置在两种混合物中表现出相同的依赖性。这种行为的定性解释是尝试，将其与压力的变化在货车范德华型相互作用。
Raman spectra of methane and methane–ethane mixtures (100, 85, and 49 mole % CH4) have been obtained as a function of pressure in the pressure range 0.1 to 15.3 MPaA (MPa absolute). For these mixtures methane v1 (symmetric C–H stretching) band positions are given as a function of pressure; for pure methane they are in agreement with previous results. The new data on the methane v1 band position of ethane-containing mixtures clearly depend on the kind of molecules surrounding the vibrating methane molecule. The v1 band position decreases with increasing pressure; the stronger the dependency, the higher the content of ethane. The ethane v1 band position in the two mixtures showed the same kind of dependency. A qualitative explanation for this behavior is attempted, relating it to changes in van der Waals-type interactions on pressure.