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.

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 …

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 …

Separating individual Platinum Group Metals (PGMs), such as Pt, Pd, and Rh, after they have been dissolved into solution is a complex process due to their close …

Results showed that, under the conditions of a ratio of 1:1 and a flow rate of 192.5 mL min-1 (processing capacity of 1.5L h-1), the extraction rates of platinum and palladium are 84.26% and 96%, and the separation coefficient is β Pt/Rh and β Pd /Rh is 132.35 and 753.5,moreover, the optimized extraction rate of platinum and palladium in …

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 platinum group metals (PGMs belonging to Pt, Pd, and Rh) are the precious metals that currently hold great financial and industrial significance [1], [2]. Owing to their distinctive properties, PGMs are used in a wide array of applications in the chemical, jewellery, pharmaceuticals, and electronic industries, albeit predominantly used in ...

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 ...

Highly selective separation of individual platinum group metals (Pd, Pt, Rh) from acidic chloride media using phosphonium-based ionic liquid in aromatic diluents

View the current Platinum spot price with APMEX Platinum price charts. See the Platinum price per ounce & Platinum price per gram to understand your purchasing power. Opens in a new window Opens an external site Opens an external site in a new window. Gold. $2,393.00 ($3.30)-0.14 % Silver. $28.46 ($0.06)-0.21 %

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.

Green chemistry procedures using a novel process based on molecular recognition principles are described for the selective separation and recovery of metals in industrial processes. This process, termed molecular recognition technology (MRT), has the capability to make selective separations at various stages in metal life cycles. Results are given for …

Models 4800P, 3600P. One of the most advanced high-capacity separators on the market, the Maxi Cap Platinum adds one-touch power electronic control and repeatable memory to a proven separator platform, capable of separating up to 40,000 lbs of material an hour. Instant power control of all parameters – fan speeds, table tilt, eccentric motion ...

Straightforward metal separations were designed on the basis of the results obtained in the single metal experiments, and selective co-extraction of Pd( II) and Pt( TV) from Rh( III)at low HC1 concentrations, as well as partial separation between Pd( ll) and Pt( IV) at high acid concentrations, were achieved.

ABSTRACT The preconcentration and separation of platinum and palladium from weakly acidic solution (pH=4) were done on microcolumn packed with Cellex-T resin. Selective platinum elution from the column was performed with 0.01 mol/l glycine solution at pH=12, while for palladium elution 1.2 mol/l thiourea (pH=0.5) or 4.0 mol/l potassium …

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.

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

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. …

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 ...

Extraction and separation of platinum group metals (PGMs) from secondary raw materials are usually carried out via hydrometallurgical …

The effects of knowledge of the solution chemistry of the platinum metals on their separation by solvent extraction and ion-exchange methods are reviewed, for the period 1950–1983. The review concentrates on the chloro-complexes of these metals and indicates those areas which need more investigation or interpretation to provide …

Abstract. The platinum-group metals (PGM) are technologically important metals which are becoming increasingly relevant in reducing harm to the environment. …

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 …

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 …

In this study, palladium (II), platinum (IV), rhodium (III) and iridium (IV) were sequentially separated with 1-hexyl-3-methylimidazole-2-thione (HMImT) from aqueous hydrochloric acid media by adjustment of hydrochloric acid concentration or in the presence of tin (II) chloride using environmental-friendly microextraction method. It is the first time …

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

Through an analysis, this review aspires to identify the most promising method - one that combines environmental friendliness and economic feasibility. …

Highly selective separation of individual platinum group metals (Pd, Pt, Rh) from acidic chloride media using phosphonium-based ionic liquid in aromatic diluent V. T. …

Recovery of PGMs (especially rhodium, platinum, and palladium) from different spent manufactured products (like catalytic converters) is considered as an important task as they are rarely found in ...