A study of palladium recovery with thiourea from nitric acid solutions |
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| Authors: | V. I. Tikhomirova T. A. Desyatova V. A. Suvorova |
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| Affiliation: | (1) Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia |
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| Abstract: | Interaction in the system Pd(II)-HNO3-SC(NH2)2 was studied. It was shown that the precipitates formed, which have various compositions and solubilities, contain palladium(II) and thiourea conversion products. Elemental, X-ray diffraction, and atomic-adsorption analyses and IR and electronic absorption spectroscopies were applied to demonstrate the possibility of virtually quantitative precipitation of palladium(II) under certain conditions in the form of a poorly soluble precipitate Pd2(CN)4 · H2O. |
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