Platinum group metals (PGMs) are a group of six metals with high market value and key importance to many industrial sectors. Due to their low prevalence in the Earth's crust and high demand, these metals have been recognized as critical materials for many years.
The separation chemistry of the platinum-group metals is among the most complex and challenging of metal separations. A brief description of procedures for isolating the platinum-group metals is set forth below, followed by descriptions of assaying and scrap-refining techniques.
The present study dealt with liquid–liquid separation of PGMs (Pt, Pd, and Rh) from a model chloride-based leach solution using an undiluted phosphoni…
Platinum Group Metals and Compounds View previous versions Hermann Renner, Günther Schlamp, Ingo Kleinwächter, Ernst Drost, Hans Martin Lüschow, Peter Tews, Peter Panster, Manfred Diehl, Jutta Lang, Thomas Kreuzer, Alfons Knödler, Karl Anton Starz, Klaus Dermann, Josef Rothaut, Ralf Drieselmann, Catrin Peter, Rainer …
A new technique for selective separation and enrichment of platinum group metals (platinum, palladium, rhodium, iridium, ruthenium) from model hydrochloric and chloride media into hydrophobic deep ...
This article describes the complex and lengthy cycle of operations required to effect complete recovery of the six platinum metals and to yield at the same time electrolytically refined copper and nickel. Today the joint activities of Rustenburg and Johnson Matthey constitute the world's largest source of the platinum metals in all forms.
For this reason, in order to obtain pure metals, it is extremely important to choose an effective, selective method for the recovery and separation of the platinum …
Mutual separation of platinum group metals (PGMs) is a particularly challenging issue in metal recovery technology. In this study, we report the successful separation of Pt(IV), Pd(II), and Rh(III)...
Separation of the Platinum-Group Metals from Base Metal Sulfides, and the Refining of Nickel, Copper and Cobalt 36.1. Overview of the Refining of the Platinum-Group Metals
Abstract A novel ionic liquid (IL) functionalized with thiodiglycol amic acid containing a soft S donor was synthesized for the effective and efficient extraction of platinum group metals (Ru, Rh, and Pd) from aqueous nitric acid solutions, such as high-level radioactive liquid waste (HLLW). The IL enabled rapid extraction of Pd(II) with an …
Abstract The paper investigated the possibility of extractive separation of palladium from platinum and rhodium with ionic liquid Cyphos IL 101. A technological …
Mutual separation of platinum group metals (PGMs) is a particularly challenging issue in metal recovery technology. In this study, we report the successful separation of Pt(IV), Pd(II), and Rh(III)...
The content of platinum-group metals is controlled by different analytical methods, which are imposed by high requirements to precision, expression, traceability, and comprehensiveness. ... Separation of platinum and rhodium from chloride solutions containing aluminum, magnesium and iron using solvent extraction and precipitation …
The recovery and purification of platinum group metals (PGMs) from multicomponent solutions are essential for attaining a sustainable circular economy. Herein, we designed redox-active electrosorbents for the separation of PGM chloroanions by leveraging the auto-oxidation of redox electrodes.
The recovery of platinum group metals (PGMs) from automotive exhaust catalysts is important, and hydrometallurgical extraction is an effective approach. In the …
Semantic Scholar extracted view of "Separation of palladium and platinum metals by selective and simultaneous leaching and extraction with aqueous/non-aqueous solutions" by Viet Nhan Hoa Nguyen et al.
In the present work we have selected the optimal conditions for recovery of platinum(IV) and palladium(II) from hydrochloric acid solutions (which are typical for separation of platinum metals) using the Fe 3 O 4 @PEG@IL MNPs, where different phosphonium and imidazolium ILs were tested.
Chromatographic separation of platinum group metals from simulated high level liquid waste using macroporous silica-based adsorbents
The extraction of platinum metals generally goes through three steps: enrichment, separation of platinum metals, and refining of platinum. The concentrate is …
A macroporous copolymer of glycidyl methacrylate — ethylene dimethacrylate, modified with ethylenediamine, is able to bind only ionic particles (PdCl4)2− from strongly acid solutions containing palladium- and copper salts. After washing the sorbent, the metal can be quantitatively desorbed with a concentrated hydrochloric acid solution. The procedure …
Simple evaluation for platinum group metals (PGMs) recovery from primary and secondary sources was made.. Various separation technologies for PGMs recycling from secondary resources are reviewed. • Advantages, challenges and outlook of recycling technologies are discussed.
The effects of knowledge of the solution chemistry of the platinum metals on their separation by solvent extraction and ion-exchange methods are revie…
294 BureauofStandardsJournalofResearch [Vol.it 1.METHODRECOMMENDEDFORTHESEPARATIONOFPLATINUM FROMPALLADIUM,RHODIUM,ANDIRIDIUM,EITHERCOL- LECTIVELYORSINGLY (a ...
About 80% of the worlds' reserves for platinum group metals (PGMs) are in South Africa's Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high …
A new technique for selective separation and enrichment of platinum group metals (platinum, palladium, rhodium, iridium, ruthenium) from model hydrochloric and chloride media into hydrophobic deep eutectic solvents without the use of chelating agents is presented for the first time.
Specifically, phosphonium-based ionic liquids have been extensively investigated for the extraction and separation of platinum group metals. In this paper, we present the extraction capacity of several phosphonium-based ionic liquids for platinum group metals from model deep eutectic solvent-based acidic solutions.
An effective solvent extraction-based method has been developed to recover individual platinum group metals (PGMs) (i.e. Pd, Pt and Rh) with high purity from …
An improved process which makes use of liquid–liquid extraction has been developed to a pilot plant stage, and this paper highlights some of the chemical and process principles …
The platinum-group metals (PGM) are technologically important metals which are becoming increasingly relevant in reducing harm to the environment. The…
This paper systematically reviews various improvements and new technologies for the separation and purification of PGMs, including solvent extraction, membranes separation, supercritical fluids, solid-phase extraction, photoreduction, and …