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题名: In situ Raman and synchrotron X-ray diffraction study on crystallization of Choline chloride/Urea deep eutectic solvent under high pressure
作者: Yuan, Chaosheng1; Chu, Kunkun1; Li, Haining2; Su, Lei3; Yang, Kun1; Wang, Yongqiang1; Li, Xiaodong4
关键词: High pressure ; Raman ; Deep eutectic solvent ; ChCl ; Urea
刊名: CHEMICAL PHYSICS LETTERS
发表日期: 2016-09-16
卷: 661, 页:240-245
收录类别: SCI
英文摘要: Pressure-induced crystallization of Choline chloride/Urea (ChCl/Urea) deep eutectic solvent (DES) has been investigated by in-situ Raman spectroscopy and synchrotron X-ray diffraction. The results indicated that high pressure crystals appeared at around 2.6 GPa, and the crystalline structure was different from that formed at ambient pressure. Upon increasing the pressure, the N-H stretching modes of Urea underwent dramatic change after liquid-solid transition. It appears that high pressures may enhance the hydrogen bonds formed between ChCl and Urea. P versus T phase diagram of ChCl/Urea DES was constructed, and the crystallization mechanism of ChCl/Urea DES was discussed in view of hydrogen bonds. (C) 2016 Elsevier B.V. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35467
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Zhengzhou Univ Light Ind, Dept Phys & Elect Engn, Zhengzhou 450002, Peoples R China
2.Wuhan Univ Technol, Sch Sci, Wuhan 430070, Hubei, Peoples R China
3.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100080, Peoples R China
4.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
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