Current and Alternative Routes in the Production of Rare ...
Rare Earth Elements (REE) are essential in the day to day life both in developed and developing countries worldwide. Due to their catalytic, magnetic, electrical, chemical, heat resistance, and optical properties, they are used in a wide range of high-tech, high value-added, and fast-growing sectors. The current state-of-the-art processes for REE extraction follows …
Rare Earth atoms see the light: Promising route for ...
Rare Earth atoms see the light: Promising route for combined optical, solid state-based quantum information processing. by Julie Cohen, University of California - Santa Barbara
Synthesis of Rare Earth Niobate and Tantalate Powders via ...
Powders of REMO4 (RE: rare earth, M: Nb and Ta) were synthesized by a coprecipitation method employing water-soluble peroxo Nb/Ta complexes. This peroxo-based method is an aqueous solution route free from organics and halides. REMO4 was directly crystallized by annealing the precursor under moderate conditions. It has been revealed that …
A simple and low-cost route to recycle rare earth elements ...
The use of rare earth elements has increasingly grown in recent years because of their special chemical, electrical, optical and metallurgical …
Novel materials and routes for rare-earth-free BaTiO3 ...
The NaNbO3-BaTiO3 (NNBT) solid solution was studied as a novel RE-free material for MLCC applications. Relaxor behaviour was found for NaNbO3 (NN)-concentrations as low as 2 mol%. The solid solution changes its behaviour with increasing NN-concentration from ferroelectric, to mixed ferroelectric-relaxor, to relaxor, to mixed behaviour again and finally …
Rare earth indates (RE: La–Yb): influence of the synthesis ...
Rare earth indates are an interesting class of compounds with rich crystallography. The present study explores the crystallographic phases observed in REInO 3 …
Recovery of rare earth elements from NdFeB based …
Keywords: rare earth elements, grinding slurries, magnet, recycling, NdFeB Abstract Since there is a constantly increasing need of rare earth elements (REE) for high tech applications combined with the supply risk of those elements from primary resources, strategies for recovering REE from scraps are essential for providing a stable supply.
Rare Earth atoms see the light: Promising route for ...
Rare Earth atoms see the light: Promising route for combined optical, solid state-based quantum information processing 25 April 2016, by Julie Cohen
Resource Efficient Production Route for Rare Earth …
Objective . The overall objective of the REProMag project is to develop and validate an innovative, resource-efficient manufacturing route (SDS process) for Rare Earth magnets that allows for the economically efficient production of net-shape magnetic parts with complex structures and geometries, while being waste-free along the whole manufacturing chain.
Rare Earth Extraction - an overview | ScienceDirect Topics
The monazites are further processed to extract the thorium and rare earth values using two major process routes namely sulfuric acid route [5] as shown in Figure 2 or sodium hydroxide digestion route as shown in Figure 3. The sodium hydroxide route is more preferred as the sodium phosphate is a by-product used as fertilizer.
Rare-earth–platinum alloy nanoparticles in mesoporous ...
Alloy nanoparticles of platinum and rare-earth elements are formed using zeolites with pore-wall defects, producing stable, highly active and selective catalysts for the propane dehydrogenation ...
Novel materials and routes for rare-earth-free BaTiO ...
Novel materials and routes for rare-earth-free BaTiO3-based ceramics for MLCC applications. By: Philip Foeller Thesis Supervisors: Prof. Derek C. Sinclair and Prof. Ian M. Reaney A thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy The University of Sheffield Faculty of Engineering
Rare earth indates (RE: La-Yb): influence of the synthesis ...
Rare earth indates are an interesting class of compounds with rich crystallography. The present study explores the crystallographic phases observed in REInO3 (RE: La-Yb) systems and their dependence on synthesis routes and annealing temperature.
Alimentary exposure and elimination routes of rare earth ...
The soil on the Baltic coast is characterized by the predomination of light rare earth elements (LREE): yttrium, lanthanum and cerium (∑REE = 7.86 mg·kg-1 dw). In the soil and bedrock of Admiralty Bay all REEs were found except for terbium, …
The ammonium-bromide route to anhydrous rare earth ...
The use of NH 4 Br in the conversion of rare earth oxides (M 2 O 3), hydrated bromides (MBr 3 · xH 2 O) or the metals scandium, yttrium and lanthanum to lutetium, to anhydrous tribromides (MBr 3) provides a plethora of chemistry.In general, the two-step procedures start with the synthesis of a ternary bromide: (NH 4) 2 MBr 5 for M ≡ La to Nd and …
Soft chemistry routes for synthesis of rare earth oxide ...
Soft chemistry routes for synthesis of rare earth oxide nanoparticles with well defined morphological and structural characteristics. L. Mancic 1, B. A. Marinkovic 2, K. Marinkovic 1, M. Dramicanin 3 & O. Milosevic 1 Journal of Nanoparticle Research volume 13, pages 5887–5897 (2011)Cite this article
Methylidene Rare‐Earth‐Metal Complex Mediated ...
Methylidene Rare-Earth-Metal Complex Mediated Transformations of C N, N N and N H Bonds: New Routes to Imido Rare-Earth-Metal Clusters. Dr. Jianquan Hong, Dr. Jianquan Hong. Department of Chemistry, Fudan University, Shanghai 200433 (P.R. China), Fax: (+86) 21 …
Current and Alternative Routes in the Production of Rare ...
Rare Earth Elements (REE) are essential in the day to day lifebothindeveloped and developing countriesworldwide for applying greener technologies. Due to …
Resource Efficient Production Route for Rare Earth Magnets
The overall objective of the REProMag project is to develop and validate an innovative, resource-efficient manufacturing route (SDS process) for Rare Earth magnets that allows for the economically efficient production of net-shape magnetic parts with complex structures and geometries, while being waste-free along the whole manufacturing chain.
The sulfuric acid bake and leach route for processing of ...
Approximately 200 rare earth bearing minerals have been identified. However, ~95% of the world's known rare earth resources are associated with the three minerals bastnasite, monazite and xenotime (Gupta and Krishnamurthy, 2005).In addition to rare earth bearing ion-adsorption clays, these three have been the principal minerals commercially processed for …
A NEW & RESOURCE-EFFICIENT MANUFACTURING ROUTE …
Start date: Jan 1, 2015 | A NEW & RESOURCE-EFFICIENT MANUFACTURING ROUTE FOR RARE-EARTH MAGNETS (REPROMAG) | REProMag is a European project that received funding from the European Union's Horizon ...
Review on hydrometallurgical recovery of rare earth metals ...
To recover rare earth metals from these ores, various processing routes have been developed. Ores obtained after mining are beneficiated using flotation, magnetic or gravity separation methods. These beneficiated ores (a few successfully exploited minerals is mentioned in Table 2 ) are usually treated hydrometallurgically or at times by ...
Schematic of possible processing routes for rare earth ...
Schematic of possible processing routes for rare earth permanent magnets, with green units describing primary processing routes for manufacturing a sintered NdFeB magnet and red arrows point to ...
A facile route for preparing rhabdophane rare earth ...
A facile route for preparing rhabdophane rare earth phosphate nanorods Xiaojuan Wang and Mingyuan Gao* Received 5th December 2005, Accepted 6th January 2006 First published as an Advance Article on the web 23rd January 2006 DOI: 10.1039/b517179b Lanthanum orthophosphate nanorods with typical dimensions of 8 nm in diameter and 80 nm
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