公开(公告)号：US20210395858A1

公开(公告)日：2021-12-23

申请号：US17281740

申请日：2019-10-02

申请人： UNIVERSITA' DEGLI STUDI DI CAGLIAR

发明人： Angela SERPE ,  Eros PERRA ,  Americo RIGOLDI

IPC分类号： C22B11/00 ,  C22B3/26

摘要： The present invention relates to a method for the recovery of palladium from an aqueous solution, comprising the steps of: (A) providing a dispersion comprising an aqueous dispersing phase comprising palladium(II), at least one non-ionic surfactant and at least one compound bearing a beta-dithiocarbonyl group, so as to form a hydrophobic complex of palladium(II) with the compound bearing a beta-dithiocarbonyl group; (B) heating the dispersion resulting from step (A) to a temperature at least equal to its cloud point so as to obtain the phase separation between the aqueous dispersing phase and a dispersed phase rich in surfactant comprising at least a part of said hydrophobic complex; (C) separating the dispersed phase rich in surfactant from the aqueous dispersing phase resulting from step (B); and (D) recovering the hydrophobic complex of palladium(II) with the compound bearing a beta-dithiocarbonyl group.