Electrical conductivity of low-temperature sodium-potassium cryolite melts

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY Acta Chimica Slovaca Pub Date : 2019-04-01 DOI:10.2478/acs-2019-0004
Emília Kubiňáková, J. Híveš, V. Danielik, Andrea Červenková, Michaela Benköová
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引用次数: 2

Abstract

Abstract Electrical conductivity of NaF-KF-AlF3 melts with different ratios of sodium fluoride and potassium fluoride was measured using a pyrolytic boron nitride tube-type cell with constant distance of electrodes. Molar cryolite ratios MR = (n(NaF) + n(KF))/n(AlF3) varied from 1.5 to 1.2 (with a step 0.1) in the temperature range of (675—900) °C. AC-techniques with a sine wave signal with small amplitude in the high frequency range were applied. Electrolyte resistance was obtained from nonlinear regression analysis according to equivalent circuit. Concentration and temperature dependency of electrical conductivity was described and defined. Experimental data were compared with literary sources and regression equations.
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低温钠钾冰晶石熔体的电导率
摘要采用电极间距不变的热解氮化硼管式电池,测量了不同氟化钠和氟化钾比例的NaF-KF-AlF3熔体的电导率。在(675-900)°C的温度范围内,分子冰晶石比MR=(n(NaF)+n(KF))/n(AlF3)在1.5至1.2之间变化(步长为0.1)。应用了在高频范围内具有小振幅的正弦波信号的交流技术。根据等效电路,通过非线性回归分析得到电解质电阻。描述并定义了电导率的浓度和温度依赖性。实验数据与文献资料和回归方程进行了比较。
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来源期刊
Acta Chimica Slovaca
Acta Chimica Slovaca CHEMISTRY, MULTIDISCIPLINARY-
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12.50%
发文量
11
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