Thermodynamics of Solvent Extraction of Perrhenate with N235 at High Concentration

摘要

In solvent extraction system of perrhenate with the extractant of N235 at high concentration, the equilibrium molalities of ReO_4 were measured at ionic strengths from 0.2 to 2.0 mol·kg~(-1) in the aqueous phase containing Na_2SO_4 as the supporting electrolyte from 278.15K to 303.15K. The standard extraction constants K~0 at various temperatures were obtained. Thermodynamic quantities for the extraction process were also calculated.