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Ion exchange experiments have been done to separate Pt(IV) and Rh(III) from chloride solution. Loading of the two metals into anion exchange resins, such as AG1-x2, AG1-x8 and AGMP-1 resin, was investigated in the HCl concentration range from 0.1 to 5M. The concentration ratio of Pt and Rh in the chloride solution was fixed at 10:1. It was found that the loading of Pt into the resins followed Langmuir...
Leaching of spent catalysts (Pt/Al2O3) with a mixture of HCl and H2O2 results in a mixed chloride solution containing Pt(IV), Fe(III), Al(III), Ni(II), and silicon. Separation of Pt(IV) from the synthetic chloride solution containing Fe(III) and Al(III) has been performed by solvent extraction and ion exchange. Effects of extraction and sorption conditions on the separation of Pt were investigated...
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