In situ solidification of ionic liquid [EMIM][EtOSO3] from melt under high pressure

被引:7
|
作者
Li, Haining [1 ]
Zhang, Yunqiang [1 ]
Zhu, Xiang [1 ]
Cheng, Xuerui [1 ]
Shao, Chunguang [2 ]
Wu, Jie [1 ]
Li, Junyu [1 ]
Ren, Yufen [1 ]
Wang, Zheng [1 ]
Wang, Yongqiang [1 ]
Yuan, Chaosheng [1 ]
Su, Lei [1 ]
机构
[1] Zhengzhou Univ Light Ind, High Pressure Res Ctr Sci & Technol, Zhengzhou 450002, Peoples R China
[2] Zhengzhou Univ, Minist Educ, Key Lab Adv Mat Proc & Mold, Dept Engn Mech, Zhengzhou 450002, Peoples R China
基金
美国国家科学基金会;
关键词
ionic liquid; Raman spectra; phase transition; high pressure; 1-ETHYL-3-METHYLIMIDAZOLIUM; CATALYSIS; RAMAN; SULFATE; SALTS; GPA;
D O I
10.1080/08957959.2013.845666
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In situ solidification of 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtOSO3] from melt under high pressure has been investigated by using Raman spectroscopy. The results indicate that [EMIM][EtOSO3] might experience a phase transition at about 2.4 GPa upon compression, which could be identified as solidification to a superpressurized glass by pressure broadening of the sharp ruby R-1 fluorescence line. Upon cooling, it solidifies as a glassy state rather than crystallizes at low temperature down to 93 K. These facts are suggestive of a phase transition of liquid to a superpressurized glass induced by compression in [EMIM][EtOSO3], which is similar to the glassy state at low temperature.
引用
收藏
页码:751 / 759
页数:9
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