Dissolution of Hydrogen in Molten LiCl-KCl

Abstract

The relation between hydrogen pressure and the Warburg coefficient derived from AC impedance measurement at an Mo electrode indicates that hydrogen gas dissolves chemically into molten LiCl-KCl. The solubility coefficient of hydrogen in molten LiCl-KClat 673 K was estimated to be 6.1 × 10⁻⁶ mol H cm⁻³ atm^−1/2 from the amount of the dissolved hydrogen obtained by tensimetry. The diffusion coefficient of the dissolved hydrogen in this melt was calculated to be 2.6 × 10⁻⁵ cm² s⁻¹ from the Warburg coefficient and the solubility coefficient.