Diffusion of Cl2 Molecules in NaCl and RbCl Crystals Doped with OH- Ions
Diffusion of Cl2 Molecules in NaCl and RbCl Crystals Doped with OH- Ions
复制标题
Cl2 分子在 OH- 离子掺杂的 NaCl 和 RbCl 晶体中的扩散
DOI：
10.1143/jpsj.62.3150
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发表时间：
1993
影响因子：
1.7
通讯作者：
T. Ikeda
中科院分区：
文献类型：
--
作者：
Shun;T. Ikeda
对Cl - 2在OH -离子掺杂的NaCl和RbCl晶体中的扩散进行了测量。通过观察电子照射下的蓝色或o2离子引起的黄色荧光来检测扩散前沿。通过化学反应求解扩散方程，可以计算出这些晶体中Cl - 2的扩散系数和亨利常数。在NaCl中扩散活化能为1.61±0.11 eV, d0 =5.8×10 -5 m2 s -1；在RbCl中扩散活化能为1.84±0.24 eV, d0 =7.1×10 -2 m2 s -1。这些结果与Diller的理论结果进行了比较。亨利常数的温度依赖性表明，cl2分子在表面的溶解是放热反应。
Diffusion measurements have been made for Cl 2 in NaCl and RbCl crystals doped with OH - ions. Diffusion front was detected by observing the blue coloration with electron irradiation or the yellow fluorescence due to O 2 - ions. The solution of the diffusion equation with a chemical reaction permits the evaluations of diffusion coefficient and Henry's constant of Cl 2 in these crystals. Activation energies of the diffusion are 1.61±0.11 eV with D 0 =5.8×10 -5 m 2 s -1 in NaCl and 1.84±0.24 eV with D 0 =7.1×10 -2 m 2 s -1 in RbCl. These results are compared with theoretical results by Diller. Temperature dependence of the Henry's constant indicates that dissolution of Cl 2 molecules at the surface is the exothermic reaction.