Determination of the solubility of uranium in bismuth by the E. M. F. Method

Лебедев, В. А.; Nichkov, I.F.; Raspopin, S.P.; Bukreev, Yu. F.

doi:10.1007/bf01115199

Cited by 2 publications

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“…Enthalpy of formation (AH~) measurements on lower arsenides and phosphides together with the observation that AH~(298 K) seems to be a linear function of the pnigogen to uranium radius ratio give an estimateS13] of AH~(298 K) for UP2 and UAs2 of -69 kcal mole -t and -60 kcal mole -t respectively. AH~(298 K) for USb2 has been found to be -(41.5 -+ 2.6) kcal mole -l. However, for UBi2 Lebedev et al [14] found AH~= -24.7 kcal mole -t. Rice et a/. [15] found -27.1 kcal mole -1, and Mills [16] selected -26.0 kcal mole -t.…”

Section: Introductionmentioning

confidence: 96%

Actinoid pnictides—II

Grønvold

Zaki

Westrum

et al. 1978

Journal of Inorganic and Nuclear Chemistry

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The heat capacities of uranium diarsenide (UAs2) and uranium diantimonide (USb:), with tetragonal structures of the anti-Cu2Sb-type, have been measured by adiabatic-shield calorimetry from 5 to about 750 K. Lambda-type transitions with maxima at 272.2 and 202.5 K for UA% and USb2, respectively, are related to maxima in the magnetic susceptibilities at 277 and 203 K, occasioned by transitions from antiferro-to paramagnetism in the compounds. Values of the heat capacities (Cp), entropies [S°(T)-S°(0)], and Gibbs energy functions-{[G*(T)-H°(O)]/T} at 298.15 K in cal K-' mole-t are 19.12, 29.41 and 15.05 for UA% and 19.16, 33.81 and 18.39 for USb 2. Tentative resolutions of the cooperative magnetic heat capacities of UAs2 and USb2 lead to the magnetic entropies AS(mag) = 0.99 and 1.70 cal K-t mole-', respectively. The values for both are significantly lower than the spin-only magnetic entropy value R In 3 = 2.18 cal K-~ mole-'.

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Section: Introductionmentioning

confidence: 96%

Actinoid pnictides—II

Grønvold

Zaki

Westrum

et al. 1978

Journal of Inorganic and Nuclear Chemistry

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show abstract

“…Therefore, the excess partial molar free energy of neptunium in liquid bismuth ⌬G The solubilities and the excess partial molar free energies of actinides in liquid bismuth are summarized in Table VII. 13,[21][22][23] The solubility of neptunium is larger than that of uranium and is close to that of plutonium. The excess partial molar free energies were in the order: |⌬G xs among the three actinides is similar to that for the actinidecadmium systems [24][25][26][27] as shown in Table VIII.…”

Section: Thermodynamic Properties For Np-bi Systems-tablementioning

confidence: 92%