【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。更多还原

【Abstract】 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 cyclohexane changed ,but the equation of P-△■ wasn’t varied.Moreover,we obtained an equation P=78.21△■+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.更多还原