Abstract
Dissolution of metallic rhodium in solutions of hydrochloric acid was studied under hydrothermal autoclave conditions. The influence exerted by various factors on the depth of rhodium(0) transfer to solution was examined. It was found that the quantitative dissolution of rhodium(0) is reached in a mixture of hydrochloric and hydrobromic acids in the presence of manganese dioxide at 20°C in autoclaves. The results obtained can be used both for an analytical determination of rhodium and for processing of rhodium-containing raw materials and synthesis of complex rhodium compounds.
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Acknowledgments
The study was carried out in part on the equipment of Krasnoyarsk regional collective use center at Federal Research Center, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences.
The authors are grateful to A.M. Zhizhaev, Cand. Sci. (Engineering), head of the laboratory of X-ray and spectral methods of analysis.
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The authors state that they have no confl ict of interest to be disclosed in the present communication.
Russian Text © The Author(s), 2019, published in Zhurnal Prikladnoi Khimii, 2019, Vol. 92, No. 8, pp. 1010–1014.
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Belousova, N.V., Belousov, O.V., Borisov, R.V. et al. Specific Features of Dissolution of Metallic Rhodium in Acid Oxidative Media under Hydrothermal Conditions. Russ J Appl Chem 92, 1102–1106 (2019). https://doi.org/10.1134/S107042721908007X
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DOI: https://doi.org/10.1134/S107042721908007X