separation platinum us7354517

Extraction and separation of platinum, palladium and rhodium using

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. …

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APPLIED ELECTROCHEMISTRY AND CORROSION PROTECTION OF METALS Separation

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

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Separation of platinum(IV) across hollow fiber supported liquid

Non-toxic diluents were studied and compared with toxic diluents for separation of platinum(IV) across hollow fiber supported liquid membrane. 91.41% extraction and 81% stripping of platinum(IV) was observed for sunflower oils at 328.15 K. Overall mass transfer resistance (R) was 146.612 × 10 4 s/cm. The separation process …

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Separation of Platinum(IV) and Palladium(II) from …

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.

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Interatomic Potentials Repository

Notes: This is the Pt interaction from the "Universal" parameterization for the openKIM LennardJones612 model driver.The parameterization uses a shifted cutoff so that all interactions have a continuous energy function at the cutoff radius.This model was automatically fit using Lorentz-Berthelotmixing rules. It reproduces the dimer equilibrium …

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Chromatographic separation of platinum group metals …

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

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Extraction and separation of multiple platinum group …

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 …

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A Combined Deep Eutectic Solvent-Ionic Liquid Process for …

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.

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Maxi Cap Platinum

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 ...

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Platinum Metals Metallurgy | SpringerLink

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 …

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Live Platinum Price Charts | Platinum Price Per Ounce

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 %

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Figure 1 | Recovery and Then Individual Separation of Platinum …

Recovery and Then Individual Separation of Platinum, Palladium, and Rhodium from Spent Car Catalytic Converters Using Hydrometallurgical Technique followed by Successive Precipitation Methods. Figure 1. Effect of changing H 2 O 2 /HCl volume percentage on PGM leaching efficiencies at 60°C for 3 hours. About Us; Contact us;

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Separation of platinum group metals using deep eutectic …

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 …

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Miniaturized application of 3D‐printed large‐flow …

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 …

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Platinum group | Chemical Properties, Uses & Occurrence

platinum group, six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and platinum (Pt). The elements all possess a silvery white colour—except osmium, which is bluish white. The chemical behaviour of these metals is paradoxical in that they are highly resistant to attack by ...

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Extraction of Platinum Group Metals | IntechOpen

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, …

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Separation and recovery of ruthenium: A review

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 ...

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Extraction of platinum group metals from catalytic converters

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.

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Separation of platinum and rhodium from chloride

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 ...

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Solvometallurgical Recovery of Platinum Group …

Extraction and separation of platinum group metals (PGMs) from secondary raw materials are usually carried out via hydrometallurgical processes. These processes use strongly oxidizing acidic solutions, …

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A review of methods of separation of the platinum …

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

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Separation of platinum and palladium from chloride

The separation of platinum and palladium from chloride solution by solvent extraction, using Alamine 300 as an extractant, has been studied. The effect of different parameters such as the ...

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(PDF) Separation of Rhodium from Platinum, Palladium, and …

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 ...

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Platinum metals-solution chemistry and separation

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 …

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Separation of platinum group metals from model chloride …

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 ...

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Separation of Platinum, Palladium and Rhodium from

Accurate separation and efficient recovery of platinum group metals (PGMs, mainly Ru, Rh and Pd) from high level liquid waste (HLLW) is a good choice for clean production and sustainable...

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Separating the Platinum Group Metals by …

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 …

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RECOVERY AND SEPARATION OF PLATINUM GROUP …

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.

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Ion-Exchange Preconcentration and Separation of Trace …

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 …

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Separation of platinum group metals using deep eutectic …

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 …

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