The pilot test of Pt-Pd and Pt-Rh feeds extracted and separated with a new sulfoxide extractant

Selective extraction of palladium(II) from hydrochloric acid solutions with phosphonium extractants

“…Traditionally, the hydrometallurgical recovery of PGMs is based on solvent extraction processes based on the fact that noble metal ions can easily form species which are extractable into the organic phase with various reagents [3,4]. Many different extractants have been studied and proposed, including dialkyl sulphides and sulphoxides [5][6][7][8], alkyl derivatives of 8-hydroxyquinoline [9], hydroxyoximes and ketoximes [10][11][12][13][14][15], hydrophobic amines and quaternary ammonium salts [16][17][18][19][20][21], organophosphorus extractants [22][23][24][25][26] and pyridinecarboxamides [27,28].…”

Extraction of palladium(II) from chloride solutions with Cyphos®IL 101/toluene mixtures as novel extractant

“…Various reagents have been studied and proposed, including hydroxyoximes and ketoximes [5][6][7][8][9][10], dialkyl sulphides and sulphoxides [11][12][13][14], alkyl derivatives of 8-hydroxyquinoline [15], hydrophobic amines and quaternary ammonium salts [16][17][18][19][20][21] pyridinecarboxamides [22,23], and organophosphorus extractants [24][25][26][27][28].…”

Efficiency and Mechanism of Palladium(II) Extraction from Chloride Media with N-Hexadecylpiperidinium Chloride

“…Very short times (about few minutes) neccesary to achieve the extraction equilibrium are a huge advantage of reagent [PIP16]Cl in comparision with commercial dialkyl sulfides. Kinetics of palladium(II) extraction from acidic chloride solutions with these extractants is very slow and a few hours are needed to achieve equilibrium [38][39][40]. Pyridine derivatives like pyridinecarboxamides also extract palladium(II) very fast and efficiently.…”