Abstract
Perrhenate anion was extracted by extractant N1923 in sulfuric acid solution at ionic strength from (0.2 to 2.0) mol·kg–1. Molalities of perrhenate after extraction were measured in sulfuric acid aqueous system from (278.15 to 303.15) K. Standard extraction constants K0 were obtained by polynomial approximation method at various temperatures. Thermodynamic properties were investigated in the extraction process.
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