Hard-sphere Results from Experimental Transport Behaviour of Molten Salts and Structural Properties
نویسنده
چکیده
A single component hard sphere description molten halides and nitrates, applied to self-diffusion and viscosity data, has led to a hard sphere size which for a given cation depends linearly upon the anionic radius. This correlation has been used to predict viscosity coefficients of fused alkali fluorides and to estimate the effective size of the N03~-anion in molten nitrates. The Stokes-Einstein relationship between r) and D is satisfied, where D= (D+Z>~)/2, and this relationship in combination with the observed linear dependence of Tl/r] and DjTl on the molar volume can in principle be used as a criterion for data selection.
منابع مشابه
Structural Relaxations in a Simple Model Molten Salt
The structural relaxations of a dense, binary mixture of charged hard spheres are studied using the Mode Coupling Theory (MCT). Qualitative differences to non–ionic systems are shown to result from the long–range Coulomb interaction and charge ordering in dense molten salts. The presented non–equilibrium results are determined by the equilibrium structure, which is input using the well studied ...
متن کاملCalculation of activities of ions in molten salts with potential application to the pyroprocessing of nuclear waste.
The ability to separate fission products by electrodeposition from molten salts depends, in part, on differences between the interactions of the different fission product cations with the ions present in the molten salt "solvent". These differences may be expressed as ratios of activity coefficients, which depend on the identity of the solvent and other factors. Here, we demonstrate the ability...
متن کاملTransport properties of the rough hard sphere fluid.
Results are presented of a systematic study of the transport properties of the rough hard sphere fluid. The rough hard sphere fluid is a simple model consisting of spherical particles that exchange linear and angular momenta, and energy upon collision. This allows a study of the sole effect of particle rotation upon fluid properties. Molecular dynamics simulations have been used to conduct exte...
متن کاملIon atmosphere relaxation controlled electron transfers in cobaltocenium polyether molten salts.
A room-temperature redox molten salt for the study of electron transfers in semisolid media, based on combining bis(cyclopentadienyl)cobalt with oligomeric polyether counterions, [Cp2Co](MePEG350SO3), is reported. The transport properties of the new molten salt can be varied (plasticized) by varying the polyether content. The charge transport rate during voltammetric reduction of the ionically ...
متن کاملHybrid Molten/Solid In2O3-Bi2O3 Oxygen Ion Transport Membranes
The hybrid molten/solid In2O3 - 30-48 wt.% Bi2O3 oxide materials were studied with respect to their transport properties. The conductivities, oxygen ion transport numbers and oxygen permeation fluxes have been measured by using the four-probe DC, volumetric measurements of the faradaic efficiency and gas flow techniques, respectively. We show that the...
متن کامل