Conductibilité électrique des systèmes LiBr-KBr fondus

Mehta, Om Prakash; Lantelme, F.; Chemla, M.

doi:10.1016/0013-4686(69)87034-9

Cited by 15 publications

(8 citation statements)

References 9 publications

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“…In binary molten salt mixtures (Li-M)X it has been observed that under some conditions Li + migrates more slowly than the larger cation M + (MX = NaBr [11], NaN03 [2, 3], KCl [4,5], KBr [1,[6][7][8], KN03 [2,9], KoS04 [10], CsCl [5], AgN03 [11][12][13], and TIN03 [14]). We shall name this kind of phenomenon the Chemla effect after Chemla, who discovered it [15].…”

Section: Introductionmentioning

confidence: 99%

Internal Cation Mobilities in the Molten Systems (Li-Rb)N0 3 and (Li-Cs)NO s

Okada

Takagi

Kawamura

1979

Zeitschrift Für Naturforschung A

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The relative differences in internal cation mobilities are measured for the molten systems (Li-Rb)N03 and (Li-Cs)N03 over a wide range of temperatures and concentrations with a countercurrent electromigration method, and the internal mobilities are calculated from these results and the available data on the electrical conductivity.The following phenomena are observed: (a) under some conditions the electrical mobility of Li+ is lower than that of the larger cation, (b) at a given temperature the mobility of Li+ decreases with increasing molar volume of the mixture, and (c) at low temperatures the isotherms of the mobility of the large cation show a maximum at some low concentration of that ion. These phenomena are interpreted in terms of the free space and the pair potential between cation and anion.

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Section: Introductionmentioning

confidence: 99%

Internal Cation Mobilities in the Molten Systems (Li-Rb)N0 3 and (Li-Cs)NO s

Okada

Takagi

Kawamura

1979

Zeitschrift Für Naturforschung A

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“…Since the rather surprising finding by Chemla and coworkers *» 2 that under certain conditions K + is more mobile than Li + in the molten mixture LiBr-KBr, the study on the mobilities of binary molten systems with monovalent cations and a common anion has attracted much attention, and for systems of chlorides 3 , bromides 4 ' 5 , nitrates 6 and sulphates 7 ' 8 , mobilities, mobility differences or transport numbers have been investigated systematically by means of zone electrophoresis, countercurrent electromigration, Hittorf's method and EMF measurement 9 . The investigation of cation mobilities in binary mixtures offers useful information on what factors affect the electromigration process since the mobilities of two different cations can be studied at the same time under various conditions.…”

Section: Introductionmentioning

confidence: 99%

Internal Cation Mobilities in the Molten Systems LiNO₃-TlNO₃ and RbNO₃-TlNO₃

Kawamura

Okada

Odawara

1975

Zeitschrift Für Naturforschung A

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The relative differences in internal cation mobilities are measured for the molten systems LiN03-T1N03 and RbN03-TlN03 over a wide range of temperature and concentration by means of countercurrent electromigration technique (Klemm's method), and the internal mobilities are calculated from the existing data on the electric conductivity for these systems. For the system LiN03-TlN03 , a marked dependence of the relative internal mobility differences on temperature is found particularly in the Li + rich region, and a considerable concentration dependence is found over the investigated temperature range. This is qualitatively explained in terms of a model which takes into account mainly the differences of the cation-anion pair potentials and of the sizes of the two cations. On the other hand, for the system RbN03-TlN03, only a slight temperature dependence is observed and no concentration dependence, if present, is detected within the experimental accuracy.

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“…209 In the first arrangement, after the solid salt is introduced in the external crucible, the temperature is raised and the melt slowly filters into the fritted compartments maintained under vacuum ( Figure 7). Sometimes, the salt is treated in a separate compartment and then pushed into the cell through a filtering pipe (Figure 8).…”

Section: Cell Designsmentioning

confidence: 99%