Near-infrared spectra of water and aqueous electrolyte solutions at high pressures
Near-infrared spectra of water and aqueous electrolyte solutions at high pressures
复制标题
高压下水和电解质水溶液的近红外光谱
DOI：
10.1007/bf00647696
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发表时间：
1984
影响因子：
1.2
通讯作者：
Keizo Suzuki
中科院分区：
文献类型：
--
作者：
A. Inoue;K. Kojima;Y. Taniguchi;Keizo Suzuki
纯水和碱金属卤化物、MgCl 2、NaClO 4和R4 NBr的水溶液的近红外光谱（9500至11000 cm−1）是在10至55°C的温度和高达500 MPa的压力下测量的。通过对吸收光谱的分析，得出以下结论。(1)随着压力的增加，冰I状开放结构被破坏，形成填充结构。(2)碱金属卤化物和MgCl 2的加入破坏了水的开放结构，水分子通过离子-偶极相互作用被限制在离子周围。这导致O-H键的松动。(3)高氯酸根离子破坏了水的开放结构，与水的离子偶极相互作用是微不足道的。(4)Bu 4 N+离子在离子周围形成类似于笼形开放结构的水结构。
The near-infrared spectra (9500 to 11000 cm−1) of pure water and aqueous solutions of alkali halides, MgCl2, NaClO4, and R4NBr were measured at temperatures between 10 and 55°C and pressures up to 500 MPa. From the analysis of the absorption spectra the following conclusions are drawn. (1) The ice I-like open structure is destroyed and the packed structure is formed as the pressure is increased. (2) The open structure of water is destroyed by the addition of alkali halides and MgCl2and water molecules are restricted around the ions by ion-dipole interactions. This results in a loosening of the O−H bond. (3) The perchlorate ion destroys the open structure of water and the ion-dipole interaction with water is insignificant. (4) The Bu4N+ion forms water structure around the ion similar to that of the clathrate open structure.