摘要
在温度23～315℃、压力高达近2000MPa 下用金刚石压腔下研究了正庚烷、环己烷及其混合物的拉曼光谱特征。结果表明:环己烷和正庚烷混合,只是改变了环己烷及正庚烷的平均 C-H 伸缩振动的拉曼位移,但是并不影响其 P-△■关系式。另外,经过数据拟合,得到了平均 C-H 伸缩振动的拉曼位移与压力的关系为:P=78.21(△■)+71.56。该公式可以用来作为流体包裹体尤其是油气包裹体的压力计。
The Raman spectroscopy of n-heptane, cyclohexane, and their mixture were investigated in a diamond anvil cell at temperatures from 23 to 315℃ and pressures up to about 2000MPa. The result shows that Raman shift of mean C-H stretching vibrational mode of n-heptane and eyclohexane changed , but the equation of P-△^-vp wasn＇t varied. Moreover, we obtained an equation P = 78.21△^-vp ＋ 71.56 as the correlation between pressure and Raman shift of the mean C-H stretching vibrational by fitting the data, and the equation can be used as pressure barometer of a fluid inclusion, especially petroleum inclusion.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第9期1981-1986,共6页
Acta Petrologica Sinica
基金
国家重点基础研究发展计划(973计划)项目资助(2006CB403508)
关键词
金刚石压腔
高温
高压
拉曼光谱
正庚烷
环己烷
流体包裹体
压力计
Diamond anvil cell
High temperature
High pressure
Raman spectroscopy
n-Heptane
Cyclohexane
Fluid inclusion
Pressure barometer
