Deuteron substitution effects on crystallization in N, N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate-water mixtures

被引：7

作者：

Abe, Hiroshi ^{[1
]}

Imai, Yusuke ^{[1
]}

Yoshimura, Yukihiro ^{[2
]}

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka, Kanagawa 2398686, Japan

[2] Natl Def Acad, Dept Appl Chem, Yokosuka, Kanagawa 2398686, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 512卷 / 4-6期

关键词：

IONIC LIQUIDS;

D O I：

10.1016/j.cplett.2011.07.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We previously reported that amorphization was observed in a room temperature ionic liquid (RTIL)-6.7 mol% H2O mixture by simultaneous X-ray diffraction and differential scanning calorimetry measurements (Y. Imai, H. Abe, T. Goto, Y. Yoshimura, Y. Michishita, H. Matsumoto, Chem. Phys. 352 (2008) 224). Here, the RTIL is N, N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate, [DEME][BF4]. In this study, the phase behavior of the [DEME][BF4]-x mol% (1 - y) H2O center dot yD(2)O mixtures is examined systematically by fixing the water concentration at around 7 mol%. Intriguingly, amorphization was completely suppressed and crystallization occurred even when a small amount of D2O was added. The crystallization temperature strongly depends on D substitutions; however, the crystal structure is not influenced by the D2O effect. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：204 / 207

页数：4

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