Abstract
Cyanex 301 and 5,8-diethyl-7-hydroxyldodecane-6-oxime (LIX 63) can selectively extract Pd(II) over Pt(IV) from concentrated hydrochloric acid solutions. Therefore, solvent extraction experiments have been performed by extractant mixtures containing either Cyanex 301 or LIX 63, and the extraction behavior of Pd(II) was compared. Among the mixtures of Cyanex 301, the highest synergistic enhancement coefficient was achieved by mixing Cyanex 301 and trioctylphosphine oxide (TOPO). However, it was very difficult to strip the Pd(II) from the loaded mixture phase. Among the mixtures of LIX 63, the mixture of LIX 63 and alamine 336/TOPO enhanced the extraction of Pd(II). Although the synergistic coefficient by Cyanex 301 + TOPO was higher than that by LIX 63 + Alamine 336, the Pd(II) in the loaded mixture phase of LIX 63 and alamine 336 was easily stripped by thiourea.
Highlights
Palladium (Pd) is widely employed in the manufacture of advanced materials for automobile, chemical, and electronic industries [1,2]
Several methods are used in the separation of Pd(II) from the leaching solutions of HCl or HNO3, such as precipitation [3], ion exchange [2,4], and solvent extraction [5,6,7,8,9,10,11,12]
Solvent extraction is suitable for the separation of platinum group metals (PGMs) because of its high selectivity and the purity of metals obtained [9]
Summary
Palladium (Pd) is widely employed in the manufacture of advanced materials for automobile, chemical, and electronic industries [1,2]. Several methods are used in the separation of Pd(II) from the leaching solutions of HCl or HNO3 , such as precipitation [3], ion exchange [2,4], and solvent extraction [5,6,7,8,9,10,11,12] Among these methods, solvent extraction is suitable for the separation of platinum group metals (PGMs) because of its high selectivity and the purity of metals obtained [9].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
