Abstract
The secondary phenylamide derivative of a trident molecule has been prepared as a novel solvent extraction reagent to investigate and to compare its extraction ability with its corresponding monopodal analogues, for the extraction of precious and base metals in nitric acid solution. The extraction ability of the trident extractant was superior to that of the monopodal analogue. The secondary phenylamide type of trident molecule exhibited extractive selectivity for silver and divalent palladium over other precious metals and base metals in nitric acid solution. The extraction mechanism of silver with the trident extractant was determined by slope analysis and the peak shift of the FT-IR and 1H-NMR spectra of the extraction reagent before and after silver loading.
