Anomalous Behavior of Internal Mobilities for Ag(I) and Tl(I) Ions in Molten Nitrates

Abstract

The data on internal cation mobilities, it, in the molten binary nitrate systems (Ag, M)N03 and (Ti, M)N03 (M = alkali metal ion) previously obtained by us have been re-examined. In binary alkali nitrates it is known to be well expressed by an empirical equation u = {A/(Vm -17)} exp (-E/RT), where V,,, is the molar volume; while A, V6, and E are constants nearly independent of the cations with which they are mixed. It is found that in melts containing U for the M deviates negatively from this equation, and that with TF, UM deviates positively. Thus, Ag and TV both with relatively high polarizabilities, have opposite effects on UM, that is a tranquilization effect and an agitation effect, respectively. The reason has been interpreted in terms of the high polarizabilities and the difference in the sizes of Ag and TV.

Fluorophilic cobalt phthalocyanine‐containing Nafion membrane: high oxygen permeability and proton conductivity in the membrane

“…A highly-fluorinated cobalt phthalocyanine, 1,2,3,4, 8,9,10,11,15,16,17,18,22,23,24,25-hexadecafluoro cobalt phthalocyanine, is commercially available (Aldrich Co.). However, it is poorly soluble in organic solvents.…”

“…It had been reported that metal-containing compounds located in the hydrophilic domains of the Nafion membrane significantly decrease the proton conductivity. [10,11] In our previous paper, [6] we utilized a hydrophobic cobaltporphyrin to be localized in the hydrophobic perfluoroethylene-backbone domain of Nafion, and the proton conductivity of the Nafion membrane was not significantly reduced.…”

High Enrichment of 6Li in Molten Nitrates by the Klemm Method

“…In the previous similar experiments of 6 Li enrichment, mentioned above [43], the separation tubes consisted also of two tubes with different diameters, heated directly with a Nichrome tape. In one of the two runs, 7 Li was anomalously enriched around the connected part of two tubes (int.…”

“…Another type of agitation effect is seen for Tl + ; for example, in (Tl, M)NO 3 (M=alkali ion or Ag + ), Tl + renders u M significantly larger than expected from (2), presumably because of the high polarizability of Tl + [43]. It should be stressed that even if (2) does not hold in some cases, the dynamic dissociation model still holds well at least qualitatively, because this model takes into account the perturbation in terms of the free space effect, the tranquilization effect, and the agitation effect.…”