高压下正戊烷的稳定性研究

乔二伟 郑海飞

乔二伟, 郑海飞. 高压下正戊烷的稳定性研究[J]. 高压物理学报, 2005, 19(4): 371-376 . doi: 10.11858/gywlxb.2005.04.016
引用本文: 乔二伟, 郑海飞. 高压下正戊烷的稳定性研究[J]. 高压物理学报, 2005, 19(4): 371-376 . doi: 10.11858/gywlxb.2005.04.016
QIAO Er-Wei, ZHENG Hai-Fei. Stability of n-Pentane under High Pressure[J]. Chinese Journal of High Pressure Physics, 2005, 19(4): 371-376 . doi: 10.11858/gywlxb.2005.04.016
Citation: QIAO Er-Wei, ZHENG Hai-Fei. Stability of n-Pentane under High Pressure[J]. Chinese Journal of High Pressure Physics, 2005, 19(4): 371-376 . doi: 10.11858/gywlxb.2005.04.016

高压下正戊烷的稳定性研究

doi: 10.11858/gywlxb.2005.04.016
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    通讯作者:

    郑海飞

Stability of n-Pentane under High Pressure

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    Corresponding author: ZHENG Hai-Fei
  • 摘要: 利用Raman散射光谱在碳硅石压腔下研究了常温下的正戊烷从0.07~4.77 GPa的稳定性。结果表明:正戊烷的 CH3、CH2对称和反对称伸缩振动2 877 cm-1、2 964 cm-1和2 856 cm-1、2 935 cm-1以及-(CH2)n -同步扭曲振动1 303 cm-1均随压力增大而基本呈线性向高频方向移动,并在2.47 GPa附近发生过压凝固,这是一种平衡稳定态之外的亚稳态现象。另外推测正戊烷在高压下可能发生固-固相变,最后通过平衡的固液共存相确定了正戊烷的平衡凝固压力为(1.900.05) GPa。

     

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出版历程
  • 收稿日期:  2004-09-22
  • 修回日期:  2005-03-21
  • 发布日期:  2005-12-05

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