platinum group characterization

Platinum group | Chemical Properties, Uses & Occurrence

Formation and selected catalytic properties of ruthenium, …

the platinum family (ruthenium, rhodium, osmium and Jan Krajczewski is an associate professor in the Molecular Interactions and Spectroscopy group at the Faculty of Chem-istry, University of Warsaw. His main research interest is the synthesis and characterization of metallic and plasmonic nanostructures and their appli-cation in optical ...

(PDF) Electrochemical Recycling of Platinum Group Metals from …

Platinum group metals (PGMs: Pt, Pd, and Rh) are used extensively by the industry, while the natural resources are limited. The PGM concentration in spent catalytic converters is 100 times larger ...

Platinum Group Metal Based Nanocatalysts for Environmental

Platinum group metals (PGMs) including iridium (Ir), osmium (Os), platinum (Pt), palladium (Pd), rhodium (Rh) and ruthenium ... Characterization of PGMs based nanocatalysts. Many different physico-chemical techniques are used to characterize nanocatalysts among them scanning electron microscopy (SEM) used for the …

Multi-elemental characterization of tunnel and road

Multi-elemental characterization of tunnel and road dusts in Houston, Texas using dynamic reaction cell-quadrupole-inductively coupled plasma–mass spectrometry: Evidence for the release of platinum group and anthropogenic metals from motor vehicles ... Platinum group elements (PGEs) including Rh, Pd, and Pt are important tracers for …

Two routes to platinum-based carboxylate-bridged heterometallics

Structure characterization with single-crystal XRD. ... Multimetallic platinum group metals-based complexes attract attention as single-molecular precursors to the mixed-metal nanoparticles, composite materials and heterogeneous catalysts for industrial, medicinal and environmental issues [1], ...

Platinum-group element (PGE) deposits and occurrences: …

Deposits containing Ni, Cu and platinum-group elements (PGE) are usually associated with mafic and ultramafic rocks. The deposits may be subdivided into two groups (Naldrett, 1981). (i) Ores with Ni and Cu as the principal products and where the noble metals (PGE and Au) are byproducts. They contain more than 10% sulfide minerals (e.g., …

(PDF) Exploration for Platinum-Group Minerals in Till: A …

Exploration for Platinum-Group Minerals in Till: A New Approach to the Recovery, Counting, Mineral Identification and Chemical Characterization. Authors: Sheida Makvandi. Malvern...

(PDF) Metals: Platinum Group Elements Recovery from Used …

The recovery of platinum group elements (PGE (platinum group element coating); Pd, Pt, and Rh) from used catalytic converters, using low energy and fewer chemicals, was developed using potassium ...

Platinum Group Elements Mineralization | SpringerLink

Platinum group element (PGE) mineralization in Mongolia is associated with ultramafic and mafic intrusions. There are three major types of PGE mineral systems known in Mongolia. The most common are (1) PGE mineralization related to ophiolites, which includes podiform chromite, (2) PGE in layered gabbro intrusions, and (3) PGE-Au placer …

Platinum Group Elements Mineralogy, Beneficiation, and …

Platinum group elements (PGEs) comprise a family of six grayish to silver-white metals, with similar physical and chemical properties. These six metals (ruthenium …

Platinum group metals substituted MCM-41 molecular sieves: …

Platinum group metals (Pd, Rh, Ir and Pt) have been used in catalytic converters to treat automobile exhaust emissions. ... In this paper, we present a detailed study of the synthesis and characterization of mesoporous MCM-41 molecular sieve catalysts containing noble metals. Furthermore, we report for the first time a comparison …

Platinum: What's So Special About the Shiny Metal?

Tennant, in collaboration with Wollaston, conducted extensive research on platinum group metals, including their interactions with acids. Their combined efforts involved analyzing various platinum ores and residues led to the identification and characterization of several new elements within the platinum group, such as iridium …

Flotation of Platinum Group Elements Ores: A Review

Platinum-group minerals are usually beneficiated by flotation or gravity separation followed by flotation. Due to poor liberation characteristics and interstitial attachment of these minerals with ...

Biogenic synthesis of platinum nanoparticles | SpringerLink

There are several existing methods for synthesizing metallic nanoparticles, with the most commonly applied being chemical reduction methods. Recently, the biogenic synthesis of noble metal nanoparticles has been developed. These methods involve biological systems such as bacteria, fungus, and plant extracts. Green and biological …

Extraction behaviors of platinum group metals in simulated high …

1. Introduction. Palladium (Pd), rhodium (Rh), and ruthenium (Ru) are commonly categorized as platinum group metals (PGMs) which with a very limited natural resources on the earth and can be used in the field of automotive catalyst, batteries, etc. [1] Meanwhile, PGMs are important kinds of fission products with relatively high yields in …

Platinum group metal-free catalysts boost cost competitiveness of …

Platinum group metal-free catalysts boost cost competitiveness of fuel cell vehicles ... advanced characterization expertise and quantum chemical modelling, address the salient knowledge gaps in ...

Platinum group complexes containing salicylaldehyde based

We hereby report the synthesis, characterization, bonding modes, antibacterial, antioxidant and DNA binding studies of half-sandwich complexes of platinum group metal having salicylaldehyde based thiosemicarbazones derivative. The thiosemicarbazone ligands chosen for this study are presented in Chart 1. Download : …

Minerals | Free Full-Text | Exploration for Platinum …

This study aims to present the advantages of applying a mineral detection routine initially developed for gold grains counting and characterization, to platinum-group minerals in <50 µm till heavy …

A non-precious metal hydrogen catalyst in a commercial polymer

Commercial PEM electrolysers use expensive platinum-group catalysts such as platinum and iridium, despite their high costs and scarcity, to achieve and maintain high activity over 50,000 h ...

Shape-Controlled Synthesis of Platinum-Based Nanocrystals

Platinum (Pt) metal, one of the six platinum-group metals as scarce elements in the earth's crust, has received wild recognition for its extensive applications, especially in thermal and electrochemical catalysis [1,2,3].Remarkably, at the nanoscale with precisely controlled morphology, size, composition, structure, and crystal phase, Pt …

Toward expanding the realm of high entropy materials to platinum group

In this regard, the platinum group metals (PGMs) show great potential for developing new high entropy materials (HEMs). The platinum group metals (PGMs) are six transition noble metals, Iridium (Ir), Osmium (Os), Palladium (Pd), Platinum (Pt), Rhodium (Rh), and Ruthenium (Ru), which clustered together at groups 8 to 10 and periods 5 and …

Platinum

Element Platinum (Pt), Group 10, Atomic Number 78, d-block, Mass 195.084. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. ... a number of platinum compounds were being formed due to reaction of the buffer and platinum …

Characterizing and recovering the platinum group …

Not only can the characterization of the gravity recoverable platinum group minerals in an ore measure the potential response to gravity, but also can be a very …

Blocking the sulfonate group in Nafion to unlock platinum's

Structural characterization. To investigate the interaction between Nafion and cyclohexanol, 1 H NMR spectra were obtained 29.As shown in Fig. 1b, the hydroxyl hydrogen of the cyclohexanol-Nafion ...

Characterizing and recovering the platinum group minerals––a review

Methods of characterizing and recovering the platinum group minerals are reviewed in this paper. First, a classification of platinum group minerals (PGMs) ore types is briefly introduced, followed by the introduction of some representative platinum group minerals. Second, the sample preparation techniques for mineralogy studies are …

Platinum-Group Elements: Mineral information, data and …

About Platinum-Group Elements Hide. A group of six metallic elements: Iridium, Osmium, Palladium, Platinum, Rhodium, and Ruthenium and their various natural alloys. The …

Standardized protocols for evaluating platinum group metal

Platinum group metal (PGM)-free electrocatalysts for the oxygen reduction reaction at the polymer electrolyte fuel cell cathode have shown substantial improvements in activity—especially those ...

Thickness dependence of the resistivity of platinum-group metal …

Platinum-group thin films show comparable or lower resistivities than Cu for film thicknesses below about 5 nm due to a weaker thickness dependence of the resistivity. Based on experimentally determined mean linear distances between grain boundaries as well as ab initio calculations of the electron mean free path, ...

Platinum-group minerals in the LG and MG chromitites of the …

The chromitites of the Bushveld Complex in South Africa contain vast resources of platinum-group elements (PGE); however, except for the economic upper group (UG)-2 chromitite seam, information on the distribution of the PGE in the ores and on the mineralogical nature, assemblages, and proportions of platinum-group minerals …