DOI: 10.1016/j.seppur.2022.122427 Corpus ID: 253085954; Separation of platinum group metals using deep eutectic solvents based on quaternary ammonium salts @article{Mokhodoeva2022SeparationOP, title={Separation of platinum group metals using deep eutectic solvents based on quaternary ammonium salts}, author={Olga …

A new separation strategy for PGMs (Pt, Pd, Rh, Ir, Ru) was proposed using tetraalkylammonium based deep eutectic solvents (DESs). • The DESs capacity is extremely high and equals 110 and 103 g kg −1 for Pd(II) and Pt(IV), respectively.. The purity exceeding 99.9% for target fractions was obtained after extraction of PGMs 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 …

Notable among these emerging techniques are solvometallurgy, molecular recognition technology, and magnetic separation. This comprehensive review endeavors to study and assess the latest advancements in the recovery of platinum group metals from spent catalysts, meticulously evaluating their respective advantages and disadvantages.

Around 0.01 M acid clear separation of Pt from Fe and quantitative co-extraction of Pt and Fe was reported in the acid range 1- 5 M acid [3]. In the present study on Pt separation from palladium raffinate, similar behavior of co-extraction of Pt and Fe was observed, leaving Cr, Mn and Ni in aqueous solution. 3.2.2. Extraction isotherm of …

Platinum wire electrodes serve as indispensable pillars in the realm of electrophoresis. It underpins the precision and reliability of molecular separation techniques.

Chromatographic separation of PGMs from simulated high level liquid waste was investigated by column method using these three adsorbents at different temperatures. The recovery rate and separation effect of every column experiment for aim elements were compared. 2. Experimental2.1. Reagents

The step is usually the solvent extraction of gold, followed by palladium or platinum. The remaining PGMs are recovered at the beginning or end of the entire process. In each case, the separation leads to pure solutions of the relevant metals, which are reduced to a pure powder or sponge.

Section snippets Materials. Stock solutions of platinum and rhodium were prepared by dissolving the necessary amount of PtCl 4 (Aldrich, 98%) and RhCl 3 ·4H 2 O (Aldrich, 99.99%) in doubly distilled water. In most of our experiments, except the concentration effect of Pt(IV) and Rh(III), the concentration of Pt (IV) and Rh(III) was …

The selective separation of platinum was carried out with 0.01 M Aliquat 336 (a quaternary ammonium salt) at an aqueous to organic ratio (A/O) of 3.3 in two stages. Stripping of Pt from loaded ...

Naito et al. [52] also investigated the recovery and mutual separation of. noble metals from the quaternary Mo–Ru–Rh–Pd alloy and. the recovery yield was more than 90 % for Ru, Rh and Pd. As ...

@article{Song2023SeparationOP, title={Separation of Palladium, Platinum and Rhodium from Metallic Mixture by Selective Dissolution with Hydrochloric Acid Solutions Containing Oxidizing Agents}, author={Si Jeong Song and Viet Nhan Hoa Nguyen and Man-Seung Lee}, journal={Mineral Processing and Extractive Metallurgy Review}, year={2023}, url ...

The separation conditions, thus, developed were validated by applying the scheme to a catalyst standard (NIST SRM-2556). The developed method has been extended for the recovery of platinum, palladium and rhodium from spent Pt–Rh thermocouple wire, coated ceramic honeycomb and palladium coated alumina catalyst. …

The present study demonstrated PGMs' separation from HCl leach liquor of the exhausted automobile catalytic converter by applying a phosphonium-based ionic …

The extraction of platinum metals generally goes through three steps: enrichment, separation of platinum metals, and refining of platinum. The concentrate is obtained from the platinum placer after gravity separation. The gravity concentrate contains more than 15% of platinum metals, which can be directly separated and …

A new separation strategy for PGMs (Pt, Pd, Rh, Ir, Ru) was proposed using tetraalkylammonium based deep eutectic solvents (DESs).. The DESs capacity is extremely high and equals 110 and 103 g kg −1 for Pd(II) and Pt(IV), respectively.. The purity exceeding 99.9% for target fractions was obtained after extraction of PGMs from …

This study indicates that a new amine derivative of β-diketone (EDAB-acac) can be successfully used in an acidic medium (HCl) to separate a mixture containing Au(III), Pd(II), and Pt(IV) ions using solvent extraction. The study was conducted in single and ternary model solutions. The impact of acid concentration and the type of solvent …

Semantic Scholar extracted view of "APPLIED ELECTROCHEMISTRY AND CORROSION PROTECTION OF METALS Separation of Platinum(IV) and Iron(III) with Liquid Membranes under Electrodialysis Conditions" by T. Sadyrbaeva

The step is usually the solvent extraction of gold, followed by palladium or platinum. The remaining PGMs are recovered at the beginning or end of the entire …

Abstract. A novel ionic liquid (IL) functionalized with thiodiglycol amic acid containing a soft S donor was synthesized for the efec-tive and eficient extraction of platinum group …

The developed technique was applied for the separation of platinum and palladium from refinery wastewater to obtain individual fractions with purity of >99.9%. The procedure does not involve the ...

Separation Science and Technology Volume 50, 2015 - Issue 15. ... 8 CrossRef citations to date 0. Altmetric Extraction. Extraction and Separation of Selected Platinum-Group and Base Metal Ions from Nitric Acid Solutions Using Thiodiglycolamides (TDGA) as Novel Extractants. E. A. Mowafy Faculty of Science, ...

Separation of platinum and palladium from concentrated HCl solutions by extraction with mixture of amines (Aliquat 336/Alamine 336/TOA) and neutral extractants (TBP/TOP/MIBK) have been investigated.

It must allow separation of the ingly employed in the non-precious metals platinum group metals from the base metals, industry, for example during the extraction where the major …

A new technique for selective separation and enrichment of platinum group metals (platinum, palladium, rhodium, iridium, ruthenium) from model hydrochloric and …

DOI: 10.1016/B978-0-08-096809-4.10036-X Corpus ID: 91875973; Separation of the Platinum-Group Metals from Base Metal Sulfides, and the Refining of Nickel, Copper and Cobalt @inproceedings{Crundwell2011SeparationOT, title={Separation of the Platinum-Group Metals from Base Metal Sulfides, and the Refining of Nickel, Copper and Cobalt}, …

A method is described for the analytical separation of platinum from each or all of the three metals, palladium, rhodium, and iridium. It is based upon the complete precipitation of the hydrated dioxides of palladium, rhodium, and iridium in a boiling solution containing sodium bromate and having an acidity of pH 6. Two precipitations of the ...

A Combined Deep Eutectic Solvent–Ionic Liquid Process for the Extraction and Separation of Platinum Group Metals (Pt, Pd, Rh) November 2021 Molecules …

Separation of platinum and palladium from concentrated HCl solutions by extraction with mixture of amines (Aliquat 336/Alamine 336/TOA) and neutral extractants (TBP/TOP/MIBK) have been investigated. The mixture of Aliquat 336 and TBP led to higher Pt(IV) separation factor at 6 M HCl solution.

Inspired by this concept, we propose a novel strategy for the mutual separation of PGMs utilizing seed-mediated growth on a polymer with a metal-coordination unit (thiocarbonyl groups, Fig. 1).In brief, nucleation of Pt 4+ ions with NaBH 4 attaches the Pt 0 seeds onto the thiocarbonyl sulfur atoms of the polymer (Fig. 1 a). The Pt seeds …