Effect of the Alkaline Metal Cations on the Electrical Conductivity of the Molten Cryolites (K3AIF6, Rb3AIF6, and Cs3AIF6)

被引：2
|
作者：
Simko, Frantisek [1 ,2 ]
Priscak, Jozef [1 ]
Kubinakova, Emilia [3 ]
Korenko, Michal [1 ]
机构：
[1] Slovak Acad Sci, Inst Inorgan Chem, Bratislava 84536, Slovakia
[2] Slovak Acad Sci, Ctr Excellence Adv Mat Applicat CEMEA, Bratislava 84536, Slovakia
[3] Slovak Univ Technol Bratislava, Dept Inorgan Technol, Fac Chem & Food Technol, Bratislava 81237, Slovakia
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2020年 / 65卷 / 05期
关键词：
TUBE-TYPE CELL; ALUMINA; FLUORIDE; POWER; SYSTEM; SALTS; ION; LIF;
D O I：
10.1021/acs.jced.0c00023
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The electrical conductivity of molten K(3)AIF(6), Rb(3)AIF(6), Cs(3)AIF(6), and CsF was measured at various temperatures using a pyrolytic boron nitride tube, platinum-rhodium alloy electrode, and alternating current impedance method. The electrical conductivity of molten K(3)AIF(6) was found to be 2.64 S.cm(-1) at 1273 K The electrical conductivity of molten Rb(3)AIF(6) was found to be 2.06 S.cm(-1) at 1273 K. The conductivity of molten Cs(3)AIF(6) at the same temperature is 1.36 S-cm(-1) because the conductivity of CsF at 1273 K was found to be 2.57 S.cm(-1). The electrical conductivity values steadily drop from lithium fluoride/fluoroaluminate through sodium and potassium to cesium fluoride/fluoroaluminate. This fall in conductivity is probably because of the increase in the size and mass of the cations (activation energy increases with decreasing conductivity).
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收藏
页码：2642 / 2648
页数：7
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