Abstract
The mechanism of synergistic extraction of gold in HCl media was researched with tri-n-octyl amine(TOA) and tri-n-octyl phospine oxide(TOPO). It was determined that the composition of synergistic extract is (TOAHTOPO) AuCl4; the constant of synergistic extracting equilibrium is 109.20; and the synergistic reaction is exothermic with − 17.187 kJ/K· mol of ΔH 298. The extraction mechanism was also studied by the IR-spectra and UV-spectra. It is found that the extraction mechanism belongs to ion-association type.
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Synopsis of the first author Yang Tianzu, professor, born in April 1958, majoring in the metallurgy of precious metals and coordination chemistry in hydrometallurgy.
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Yang, T., Shui, C. & Bin, W. The synergistic mechanism of solvent extraction of gold in HCI media with TOA and TOPO. J Cent. South Univ. Technol. 6, 28–31 (1999). https://doi.org/10.1007/s11771-999-0026-2
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DOI: https://doi.org/10.1007/s11771-999-0026-2