platinum group behaviour


(PDF) Contrasting hydrothermal behaviour of platinum-group ...

Contrasting hydrothermal behaviour of platinum-group elements of Ir and Pd sub-groups as exemplified by platinum-group minerals in Great Serpentinite Belt, eastern Australia.

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BEHAVIOR OF THE PLATINUM.GROUP ELEMENTS DURING ...

BEHAVIOR OF THE PLATINUM.GROUP ELEMENTS DURING DIFFERENTIATION OF THE NORTH MOUNTAIN BASALT, NOVA SCOTIA JOHN D. GREENOUGH Depanment of Geological Sciences, University of British Columbia, Okanagan University College, 3333 College Wa-,-, Kelowna, British Columbia VIV 1V7 BRIAN J. FRYER*

Tensile Properties of the Platinum Group Metals

Basic information resulting from studies of the alloying behavior and mechanical properties of the platinum group of metals is presented. Tension tests were conducted on five of the six platinum-group metals over a range of temperatures from −196 to 1000 C.

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Behavior of Platinum Group during Their Pyrometallurgical ...

The behavior of platinum group metals (PGMs) during their recovery with smelting of spent automotive ceramic catalysts powder in the presence of metallic copper at elevated temperatures is studied in this paper. Two different metal recovery mechanisms pr...

Properties and behavior of the platinum group metals in ...

Properties and behavior of the platinum group metals in the glass resulting from the vitrification of simulated nuclear fuel reprocessing waste - Volume 6 Issue 12 - Ch. Krause, B. Luckscheiter

Behavior of Platinum Group Metals during Their ...

The behavior of platinum group metals (PGMs) during their recovery with smelting of spent au-tomotive ceramic catalysts powder in the presence of metallic copper at elevated temperatures is studied in this paper. Two different metal recovery mechanisms proved to be active in this process:

FUNDAMENTALS OF THE FLOTATION BEHAVIOUR OF …

2.2. Phase and phase relations of the platinum-group elements 23 2.3. Flotation behaviour of the platinum-group minerals 25 2.3.1. Platinum-group element recovery from the oxidized MSZ of the 29 Great Dyke Zimbabwe 2.4. Chemical stability of Michenerite 30 2.5.

High temperature behaviour of platinum group metals in ...

The high temperature behaviour of the platinum group metals in oxidizing atmospheres is characterized by the formation of volatile oxides in addition to the evaporation of pure metal. The pressure- and temperature-dependent oxide evaporation can considerably increase the metal losses when compared with high vacuum or inert atmosphere conditions.

Anthropogenic emission of platinum-group ... - SpringerLink

Abstract. The introduction of catalytic converters on cars in order to meet emission standards initiated the beginning of a sometimes controversial discussion on the probable immission of platinum-group elements (PGE) into, and their possible effects on the environment.

Behavior of Platinum Group Metals during Their ...

The behavior of platinum group metals (PGMs) during their recovery with smelting of spent automotive ceramic catalysts powder in the presence of metallic copper at elevated temperatures is studied in this paper. Two different metal recovery mechanisms proved to be active in this process: 1) Wetting of micro-dispersed particulates of PGMs in the slag by molten copper, formation of copper ...

Platinum group metals behaviour during iron precipitation ...

Platinum group metals behaviour . during iron precipitation and goethite seeding . in nickel sulphate solution. by . Rj Coetzee . Thesis presented in partial fulfilment . of the requirements for the Degree . of . MASTER OF ENGINEERING (Extractive Metallurgical Engineering) in the Faculty of Engineering .

Is palladium better than platinum? - Prosumer Diamonds

Oct 18, 2013· Here are the facts: Palladium is less expensive than platinum Palladium weighs less than platinum Palladium belongs to the same chemical group as platinum and therefore has similar chemical behaviour Palladium is more difficult to work with in jewelery Platinum and palladium are indeed quite similar. They have similar color as both are naturally white.

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Platinum group - Wikipedia

The platinum-group metals (abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs)) are six noble, precious metallic elements clustered together in the periodic table.These elements are all transition metals in the d-block (groups 8, 9, and 10, periods 5 and 6).

Polarographic behavior of the platinum group metals

It has been reported in the literature that metals of the VIII group showed a catalytic effect on the discharge of hydrogen, giving rise to polarographic waves at less negative potentials. The case of platinum has been studied in detail and it was found that the waves were roughly proportional to the amount of the metal in solution.

Geochemical behaviour of platinum-group elements (PGE) in ...

Read "Geochemical behaviour of platinum-group elements (PGE) in particulate emissions by automobile exhaust catalysts: experimental results and environmental investigations, Science of the Total Environment" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

The Behavior of Rhenium and the Platinum Group Elements ...

behavior. The poor correlation may be an indication that the abundances are controlled by a phase other than olivine. The low abundances and variability of Re may also be the result of degassing during the eruption Kilauea volcano. Introduction The behavior of Rhenium (Re) and the Platinum Group Elements (PGE) are studied in a picritic

Platinum group element behaviour and thermochemical ...

Enriched sulfide horizons generally associated with pegmatoidal rocks are lacking. The fractionation of platinum-group element (PGE) displays evidence of erratic dispersion throughout the intrusion. PGE patterns of chromitites show high Ir and Ru contents, relatively high Rh content and an unusual Pt-Pd depletion lower than in ophiolitic ...

A Review of the Behaviour of Platinum Group Elements ...

deposit of platinum group elements (PGEs) is that associated with magmatic base metal sulfide minerals in layered mafic or ultramafic igneous intrusions.The common association of PGEs with sulfide minerals is a result of processes of magmatic and sulfide …

Platinum group element behaviour and thermochemical ...

Platinum group element behaviour and thermochemical constraints in the ultrabasic–basic complex of the Vizcaino Peninsula, Baja California Sur, Mexico. Author links open overlay panel N Vatin-Perignon a J Amoss ...

The behaviour of platinum-group elements in basalts from ...

PeterMommeÆ ChristianTegnerÆ C.KentBrooks ReidR.Keays The behaviour of platinum-group elements in basalts from the East Greenland rifted margin

Platinum group | chemical element group | Britannica

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

Magmatic Ore Deposits in Layered Intrusions—Descriptive ...

Schematic representation of a fractionating, platinum-group elements (PGE) enriched immiscible sulfide liquid droplet. Major partitioning behavior at each stage is emphasized by bold text.

Effect of platinum group metal addition on microstructure ...

Effect of platinum group metal addition on microstructure and corrosion behaviour of Ti–47?5at-%Al I. A. Mwamba*1,2, L. A. Cornish2 and E. van der Lingen3 Plain and alloyed titanium aluminides of composition Ti–47?5 at-%Al were prepared with the

A Review of the Behaviour of Platinum Group Elements ...

The largest and most significant type of geological deposit of platinum group elements (PGEs) is that associated with magmatic base metal sulfide minerals in layered mafic or ultramafic igneous intrusions. The common association of PGEs with sulfide minerals is a result of processes of magmatic and sulfide liquid segregation and fractionation.

Dissolution behaviour of platinum group metals into …

Dissolution behaviour of platinum group metals into molten slags Kazuki Morita*1, Chompunoot Wiraseranee1, Hiroshi Shuto1, Shigeko Nakamura1, Kokoro Iwasawa1, Toru H. Okabe1 and Nobuo Sano2 Platinum group metals (PGMs), which have high melting temperatures and high chemical

Discussion on behavior of platinum group metals in ...

Studies on behavior of platinum-group metals (PGMs) in pressure cyanide leaching indicate that the percent PGM extraction follows the order of Pd>Pt>Rh, while the chemical stability of PGM cyanide ...