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| Título: | The extraction of mineral acids by the phosphine oxide Cyanex 923 |
Autor: | Alguacil, Francisco José CSIC ORCID; López Gómez, Félix Antonio CSIC ORCID CVN | Palabras clave: | Mineral acids extraction Cyanex 923 |
Fecha de publicación: | sep-1996 | Editor: | Elsevier | Citación: | Hydrometallurgy 42 (2) : 245-255 (1996) | Resumen: | The distribution equilibria of mineral acids: H2SO4, H3PO4, HCI, HClO4 and HNO3 between aqueous solutions and organic solutions of the phosphine oxide Cyanex 923 in toluene or decane are described. Partition studies have shown that the organic diluent only slightly influences the acid extraction. The extraction mechanism can be related to the solvation of the acid and formation of the L · Hm+Xm−1 (m = 1, 2 or 3) species in the organic phase, where L is the extractant; only in the case of initial high HNO33 concentrations is the formation of the L · (HNO3)2 species apparent in this phase. The effect of temperature on the acid extraction is also evaluated. | Versión del editor: | 10.1016/0304-386X(95)00101-L | URI: | http://hdl.handle.net/10261/38372 | ISSN: | 0304-386X |
| Aparece en las colecciones: | (CENIM) Artículos |
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