hydration in concentrated aqueous solution
hydration in concentrated aqueous solution
复制标题
在浓水溶液中水合
DOI：
10.1088/0953-8984/8/25/004
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
G. W. Neilson
中科院分区：
文献类型：
--
作者：
I. Howell;G. W. Neilson
对重水氯化锂溶液在14、3.6和1mol / l浓度下进行了中子衍射实验。将一阶同位素差法应用于锂离子的水化反应，得到了水化反应的结构结果：在研究的浓度范围内，第一水化壳层中Li - O和Li - D的近邻距离保持不变，分别为1.95(3)和2.5(5)A。然而，在14摩尔摩尔时配位数从3.2增加到1摩尔摩尔时。也有证据表明存在相对较弱的第二水化壳，它在较低浓度下位移到更大的距离。
Neutron diffraction experiments were carried out on aqueous solutions of lithium chloride in heavy water at three concentrations - 14, 3.6 and 1 molal. The first-order isotopic difference method was applied to the lithium ions, and structural results were obtained for the hydration: the Li - O and Li - D near-neighbour distances in the first hydration shell remain the same at 1.95(3) and 2.5(5) A over the concentration range studied. However, there is an increase in coordination number from 3.2 at 14 molal to at 1 molal. There is also evidence for a relatively weak second hydration shell, which becomes displaced to larger distances at lower concentrations.