Results 61 to 70 of about 3,763 (235)

Synergistic Smelting and Recovery of Platinum Group Metals from Metallurgical By-Products and Spent Catalysts: A Review of Traditional Technologies and Microwave Metallurgy

Metals
Platinum group metals (PGMs)—comprising platinum (Pt), palladium (Pd), rhodium (Rh), iridium (Ir), ruthenium (Ru), and osmium (Os)—are indispensable strategic materials for key industries, including automotive manufacturing, petrochemical engineering ...
Leyi Wang, Jiali Yu, Li Yang, Xiaolei Ye, Ming Hou, Lei Gao, Qifei Sun, Xingxian Shao, Shenghui Guo   +8 more
doaj   +1 more source

Durable Fuel Cell Cathode Enabled by Pt Embedded Nanoscale Carbon Network via a Scalable Process

Carbon Energy, EarlyView.
Platinum nanoparticles embedded nanoscale carbon network (Pt‐e‐Cn) are developed via a scalable flame spray pyrolysis process. Proton exchange membrane fuel cells (PEMFC) employing mesoporous Pt‐e‐Cn cathode electrocatalysts exhibit exceptional durability without compromising performance.
Suriya Venkatesan, Jens Mitzel, Tobias Morawietz, Emmanuelle Boehm‐Courjault, Deven P. Estes, Laure Guétaz, Indro Biswas, Jan Van Herle, Karsten Wegner, Pawel Gazdzicki, Kaspar Andreas Friedrich   +10 more
wiley   +1 more source

Electrospun Porous Materials for the Next‐Generation Proton Exchange Membrane Fuel Cells: Progress, Challenges, and AI‐Optimized Perspectives

Carbon Energy, EarlyView.
Incorporating AI to optimize solution, process, and environment enables efficient prediction of structural properties and performance, allowing tailoring of GDL, CL, and PEM fabrication to guide PEMFC toward 9.0 kW L‒1 by 2040. ABSTRACT The performance and commercial viability of proton exchange membrane fuel cells (PEMFCs) are constrained by key ...
Shangfeng Jiang, Panfeng Wang, You Gong, Zeyu Sun, Huatan Chen, Geng Wang, Ting Tao, Chuang Zhai, Xi Wang, Ruixin Chen, Jiaxin Jiang, Bingrong Zhang   +11 more
wiley   +1 more source

Reflecting Phase-Gradient Metasurface for Radar Cross Section Reduction

, 2023
In this work, we present a general approach to design reflecting phase-gradient metasurfaces (PGMs) for radar cross-section (RCS) reduction using generalized Snell’s laws.
Afzal, MU, Esselle, KP, Lalbakhsh, A, Singh, K   +3 more
core   +1 more source

PGE distribution in the Chromite bearing mafic-ultramafic Kondapalli Layered Complex, Krishna district, Andhra Pradesh, India

Open Geosciences, 2015
The Kondapalli Layered Complex (KLC) is a dismembered mafic-ultramafic layered intrusion, mainly composed of gabbroic and anorthositic rocks with subordinate ultramafics and chromitite.
Meshram Tushar M., Nannaware Shraddha. B., Nannaware B., Bhatacharjee Shantanu, Waghmare Minakshi. M., Rajakumar T.   +5 more
doaj   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source

Formic‐Acid In Situ Hydrogen Enables Programmable Ru–Pd–Pt/C Trimetallic Interfaces for Durable Acidic HER

Carbon Energy, EarlyView.
Bamboo diaphragm−derived carbon is used as a support to prepare Ru–Pd–Pt/C catalysts through a stepwise reduction strategy. The Ru–Pd interface promotes formic acid activation and induces Pt deposition. The metallic interface of Ru–Pd–Pt/C enables H* generation, transfer, and recombination, thereby improving Pt utilization, acidic HER activity, and PEM
Liangmeng Ni, Aiyue Huang, Xin Feng, Zhijia Liu   +3 more
wiley   +1 more source

Arsenal of democracy in the face of change: Precision Guided Munitions (PGMs), their evolution and some economic considerations, Working Paper No. 4

, 1990
A brief study was made of some of the forces driving the move to Precision Guided Munitions (PGMs), including the quest for military effectiveness, combat experience, and logistic compression. PGMs cost from a few hundred to a few thousand dollars per Kg
Chester, C. V.
core   +1 more source

Leaching of selected PGMs : a thermodynamic and electrochemical study employing less aggressive lixiviants [PDF]

, 2008
Includes abstract.Includes bibliographical references (leaves 74-79).Historically the platinum group metals (PGMs) have been, and are still being dissolved by means of rather aggressive methods, e.g. aqua regia.
Kriek, R J
core   +1 more source

Solvent Extraction of Rhodium from Chloride Solutions added Tin(II) with Amine Extractants

Journal of MMIJ, 2018
Chloride is one of the effective medium in which platinum group metals (PGMs) can be brought into a solution, thus chlorocomplexes are particularly important in the process chemistry of PGMs separations. Rh (III) chlorocomplexes are poorly extracted into
Akira ISHIKAWA, Takeshi TANISHIGE, Asaka TAI, Tasuma SUZUKI, Masakazu NIINAE   +4 more
doaj   +1 more source