Results 91 to 100 of about 5,473 (299)

Atomic‐Level CuOx‐CoOx‐Pd Interfacial Engineering Enables Hierarchical Synergy for High‐Efficiency ORR Pathways and Boosted Power Output in Alkaline Fuel Cells

Advanced Science, EarlyView.
Atomically dispersed CuOx (CPCu‐1) forms isolated Cu–Ov sites that enable defect‐mediated O2 activation and fast electron/proton transfer via interfacial synergy. In contrast, thick CuOx clusters (CPCu‐10) promote a surface‐adsorption‐controlled pathway with intermediate accumulation, highlighting a mechanism switch from interfacial activation to ...
Yang‐Yang Hsu, Ching‐Hua Fan, Kuan‐Wen Wang, Kuang‐Kuo Wang, Nozomu Hiraoka, Hirofumi Ishii, Ting‐Shan Chan, Po‐Chun Chen, Tsan‐Yao Chen   +8 more
wiley   +1 more source

FIRST REPORT ON PLATINUM-GROUP MINERALS IN CHROMITITES J%OM NORTHWESTERN NEYRIZ OPHIOLITE, IRAN [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
Electron-probe microanalyses and scanning electron microscopy of chrornitites from some ultramafic members of Neyriz ophiolite indicate that sulifides of platinum- group minerals (PGMs) occur as solid inclusions in chromite grains.
doaj  

Noble metal geochemistry of the Mesoproterozoic igneous complexes Bashkirian meganticlinorium and the eastern edge of the East European Platform

Литосфера, 2018
First described the noble metal (platinum group elements (PGE) and Au) geochemical specialization of magmatic rocks of Bashkirian meganticlinorium and the adjacent part of the East European Platform (EEP).
Sergei G. Kovalev, Sergei S. Kovalev, Sergei I. Vysotsky   +2 more
doaj   +1 more source

Characterisation of the effect of alteration on the PPM platinum ore and evaluation of selected strategies to improve metallurgical performance

, 2011
The aim of this study is in two parts; the first part focuses on mineralogical quantification of the extent of weathering at PPM by profiling the flotation behaviour and host rock density with spatial ...
Ramonotsi, Mpho
core  

Wood‐Based Bioelectronics: Lignosulfonate‐Based Conductive Biocomposites for Paper Organic Electrochemical Transistors

Advanced Electronic Materials, EarlyView.
Biodegradable wood‐based bioelectronics are realized by integrating poly (2,3‐ethylenedioxythiopene:lignosulfonate (PEDOT:LigS) as a mixed ionicelectronic channel in organic electrochemical transistors fabricated on paper substrates. The biocomposite exhibits high conductivity, biocompatibility, and strong transistor performance, while devices built on
Katharina Matura, Tobias Grabner, Sarka Hradilova, Munise Cobet, Ariana Opletalova, Katerina Polakova, Alessandra Operamolla, Niyazi Serdar Sariciftci, Serpil Tekoglu   +8 more
wiley   +1 more source

Precious and Base Metal Minerals in Black Sands of the Egyptian Mediterranean Coast: Mineralogical and Geochemical Attributes

Resources
This paper investigates the mineralogical and geochemical characteristics, as well as the possible sources, of gold, silver, platinum group elements (PGE), copper, and lead found in the beach sands along Egypt’s Mediterranean coast.
Abdel-Aal M. Abdel-Karim, Ahmed Gad
doaj   +1 more source

Microfluidic solvent extraction of platinum and palladium from a chloride leach solution using Alamine 336

, 2013
Microfluidic solvent extraction (μSX) of platinum and palladium from chloride leach solution using Alamine 336 had been conducted. The leach solution was produced by leaching of spent automotive catalysts.
Nikoloski, A.N., Wang, M-W, Yin, C-Y
core  

Editorial for the Special Issue “Platinum-Group Minerals: New Results and Advances in PGE Mineralogy in Various Ni-Cu-Cr-PGE Ore Systems”

, 2019
The platinum-group minerals (PGM) consist of a group of accessory minerals that concentrate the six platinum-group elements (PGE): osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt), and palladium (Pd) [...
Federica Zaccarini, Andrei Y. Barkov
core   +1 more source

The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (PGMs) in South Africa and Russia

, 2021
Russia and South Africa are the world’s leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities.
Tatiana Alexandrova, Cyril O’Connor, O’Connor, Cyril, Alexandrova, Tatiana   +3 more
core   +1 more source

Application of SEM and EDS for Phase Characteristics Analysis of Platinoid Mineral in the Danba Area

Yankuang ceshi, 2013
The study on of occurrence states of PGE resources and the smelting of ore mineral has long been a difficult problem to solve due to low grade copper and nickel sulfide, fine grain and the isomorphism of PGE elements in the Danba area.
WANG Kun-yang, XU Jin-sha, RAO Wen-hua, PEI Yan-lu   +3 more
doaj