scandium yttrium rare

Recent progress and prospects of rare earth elements for
2023.8.14 Abstract. Rare earth elements, a collective name for 17 metallic elements of scandium, yttrium, and lanthanides of Group IIIB in the chemical periodic table with
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Rare Earths Statistics and Information U.S. Geological
Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodity group rare earths - scandium, yttrium, and the lanthanides. The principal
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Decoupling of scandium and rare earth elements in organic
2023.6.26 Only few datasets on scandium (Sc) and rare earths and yttrium (REY) in rivers are available and the behaviour of Sc in the hydrosphere is poorly understood.
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Mobility of rare earth elements, yttrium and scandium from a ...
2018.3.15 Mobility of rare earth elements, yttrium and scandium from a phosphogypsum stack: Environmental and economic implications - ScienceDirect
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Developing scandium and yttrium coordination chemistry to
2020.5.15 Pniok, M. et al. Thermodynamic and kinetic study of scandium(III) complexes of DTPA and DOTA: a step toward scandium radiopharmaceuticals. Chem. A
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Determination of rare-earth, yttrium, and scandium
Determination of rare-earth, yttrium, and scandium abundances in rocks and minerals by an ion exchange-x-ray fluorescence procedure G. Nelson. Eby Cite this: Anal. Chem. 1972,
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Rare Earth Single-Atom Catalysts for Nitrogen and Carbon
2020.1.14 Herein, yttrium and scandium rare earth SACs are successfully synthesized on a carbon support (Y 1 /NC and Sc 1 /NC). Different from the well-known
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Characteristic Studies of Critical Rare Earths Scandium and Yttrium ...
2021.2.17 In this paper, we reported characteristic studies of critical rare earth such as scandium and yttrium from the circulating fluidized bed combustion fly ashes. The
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Identifying quasi-2D and 1D electrides in yttrium and scandium
2018.12.17 npj Computational Materials - Ab initio calculations identify a class of rare earth yttrium and scandium chloride electrides. A team led by Huiyang Gou at Center for
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What are rare earth elements, and why are they
2 天之前 U.S. Geological Survey news release "Going Critical". The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and
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Scandium, yttrium, and lanthanide occurrence in - Springer
2023.1.12 There is a dearth of data on rare earth elements (REE), yttrium and scandium in foods which extends also to baseline datasets for edible wild mushrooms, though this has started to change in the last decade. Concentrations and shale normalized patterns of REE and Y (REY) were studied by using inductively coupled
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Special issue on rare earths - UNCTAD
2020.9.2 Rare earths are a group of 17 elements including the 15 lanthanides, plus Scandium and Yttrium. Rare earths can be classified either as Light Rare Earth Elements (LREE) or Heavy Rare Earth Elements (HREE). Rare Earth Elements (REE) are considered as “light” when their atomic number ranges from 57 to
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Crystal Structure of Lanthanum Nitride1,2 Journal of the
This article is cited by 21 publications. Rati Ray Banik, Swarup Ghosh, Joydeep Chowdhury. Ultralow lattice thermal conductivity, negative thermal expansion, elastic and thermoelectric properties of Lanthanum Nitride: Insights from first-principle calculations.
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Substituted diamides of dipicolinic acid as extractants and
2023.8.1 The variety of newly synthesized diamides of dipicolinic acid (DPA) bearing methyl- and oxymethyl substituents in various positions of phenyl ring was investigated as potential ligands for liquid–liquid extraction of rare earth metal ions and as membrane active compounds in plasticized polymeric membranes of potentiometric sensors.It is found that
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Review of Fracturing Techniques (Microwaves, High-Voltage
2023.4.10 1. Introduction. Decreases in mineral grades of known ore deposits, increasing global demand for commodity metals, greater operating costs of mining, and deeply buried deposits have stimulated interest in alternative mining technologies (Singh et al. Citation 2019).Conventional mining technologies are economically feasible for shallow
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The Lanthanides, Rare Earth Metals - Wells - Wiley Online
2001.4.16 The elements scandium and yttrium are also known as the “rare earths” because they were originally discovered together with the lanthanides in rare minerals and isolated as oxides, or “earths.” In comparison with many other elements, however, the rare earths are not really rare, except for promethium, which has only radioactive isotopes.
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Trend of the research on rare earth elements in ... - Springer
2020.2.22 Rare earth elements (REEs) consist of 17 transition metals which are the 15 lanthanides and yttrium and scandium. These elements have great utility in the production of modern technology, especially electronics. However, these materials may pose a serious threat to the environment if handled or disposed of incorrectly; the effects of
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Analysis of pure scandium, yttrium, and their oxides using
2011.11.30 The analytical possibilities of direct detection of rare earth and non-rare-earth impurities in pure scandium, yttrium, and their oxides using the ICP-AES and ICP-MS methods are investigated. The analytical lines and isotopes of the sought elements that are the most free from folding are selected. The effect of the sought impurities of the matrix
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The Lanthanides, Rare Earth Elements - Wiley Online Library
2012.1.27 The lanthanides (or lanthanons) are a group of 15 elements of atomic numbers from 57 through 71 in which scandium (atomic number 21) and yttrium (atomic number 39) are sometimes included. The lanthanide series proper is that group of chemical elements that follow lanthanum in its group IIIB column position of the periodic table.
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Rare‐Earth Elements in Deep‐Sea Sediments in the South
2023.1.29 Rare-earth elements (REE) consist of the Group 3 metals in the periodic table, including lanthanoids (15 elements from La to Lu), yttrium (Y), and scandium (Sc) as defined by IUPAC (Connelly et al., 2005). Given that the term “REE” is commonly restricted to the lanthanoids, in this study we refer to lanthanoids plus yttrium as “REY ...
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Rare earth elements: A review of applications ... - ScienceDirect
2019.7.1 Rare earth elements (REEs) are essential for many modern technologies and industries, but they also pose significant environmental challenges. This article provides a comprehensive overview of the occurrence, exploration, analysis, recycling, and impact of REEs, as well as their applications in various fields. The article also compares and
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Seltene Erden Institut für Seltene Erden und Metalle
Seltene Erden / Rare Earth Elements / REE. Seltene Erden, jedes Mitglied der Gruppe der chemischen Elemente, das aus drei Elementen der Gruppe 3 (Scandium[Sc], Yttrium[Y] und Lanthan[La]) und der ersten erweiterten Reihe von Elementen unterhalb des Hauptkörpers des Periodensystems (Cer[Ce] durch Lutetium[Lu]) besteht.
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Scandium, yttrium and the rare earth contents of water lily
1978.6.1 The contents of scandium, yttrium and the rare earth elements, determined by spark source mass spectrometry, for water lily, Nuphar lutea (Willd.) Pers., from Dow Loch (Scotland) have been compared with those for the National Bureau of Standards Orchard Leaf SRM 1571 and Dow Loch sediment. In contrast to the conclusions from a
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Characteristic Studies of Critical Rare Earths Scandium and Yttrium ...
2021.2.17 In this paper, we reported characteristic studies of critical rare earth such as scandium and yttrium from the circulating fluidized bed combustion fly ashes. The preliminary study investigated the performance of three reagents, HCl, H 2 SO 4 , and HNO 3 on rare earth leaching from a Korean circulating fluidized bed combustion fly ash.
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Rare Earth Elements (Metals) - List - ThoughtCo
2019.5.2 The rare earth elements (REEs) or rare earth metals (REMs) are a group of metals found within the same ores and possessing similar chemical properties. Scientists and engineers disagree on exactly which element should be included in a list of the rare earths, but they generally include the fifteen lanthanide elements, plus scandium and
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Rare Earth Element - an overview ScienceDirect Topics
Rare earth elements (REEs) represent the group of 17 elements comprising 15 lanthanides, plus yttrium (Y) and scandium (Sc) (Table 1). Among the REEs, yttrium was discovered first in 1794 by a Finish chemist, Johan Gadolin who isolated an oxide and called it “yttria,” in a mineral collected from a quarry near the village of Ytterby in Sweden.
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Scandium, Yttrium, Lanthanum and Actinium - ScienceDirect
1997.1.1 Scandium is very widely but thinly distributed and its only rich mineral is the rare thortveitite, Sc 2 Si 2 O 7 (p. 348), found in Norway, but since scandium has only small-scale commercial use, and can be obtained as a byproduct in the extraction of other materials, this is not a critical problem.
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Recent advances in the rare-earth metal triflates
2020.10.25 In the past three decades, rare-earth metal triflates including scandium triflate, yttrium triflate, and the lanthanide (La−Lu) triflate, were widely employed in the organic chemistry, such as cyclization, C-H
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Rare-earth element Uses, Properties, Facts
2024.1.21 rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below
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(PDF) Crystal structure and lattice dynamics of
2006.2.1 The lattice dynamics of scandium trihydride and, for comparison, yttrium trihydride were studied by inelastic neutron scattering at 20 K in the range of energy transfers 4–250 meV. The spectra ...
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The Lanthanides, Rare Earth Elements - Wiley Online Library
2012.1.27 Abstract. The lanthanides (or lanthanons) are a group of 15 elements of atomic numbers from 57 through 71 in which scandium (atomic number 21) and yttrium (atomic number 39) are sometimes included. The lanthanide series proper is that group of chemical elements that follow lanthanum in its group IIIB column position of the periodic
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In situ recovery, an alternative to conventional
2016.12.1 Scandium, rhenium, rare earth elements, yttrium, selenium, molybdenum, and vanadium were mined in pilot tests as by-products of uranium extraction. ISR of gold, copper, nickel, rare earth elements and scandium has been successfully developed over recent years. The paper discusses other commodities that have potential to be mined
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Separation and purification of scandium by solvent
2011.5.27 Scandium(III) extractions are interfered with by commonly associated elements such as iron(III), zirconium(IV), titanium(IV), thorium(IV), yttrium(III) and lanthanides(III). The advantages and disadvantages of applications of ion exchange and liquid membrane technologies for scandium recovery are reviewed and compared with
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High purity scandium extraction from red mud by novel
2021.6.1 Based on different stability of scandium and yttrium group sulfates, K 3 Sc(SO 4) 3 can be crystallized with scandium selective precipitation efficiency of 98% [Volkov et al., 1997]. Thus, sulfuric acid is efficiently applied during baking and leaching treatment for the extraction of rare earth metals from their ores and concentrates [
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Highly active rare-earth metal catalysts for heteroselective
2019.4.17 Rare-earth metal complexes usually exhibit high activities in the ring-opening polymerization (ROP) of lactide, yet only a few scandium complexes have shown satisfactory activity. Herein, we report the synthesis of a series of chiral anilido-oxazoline-supported scandium and yttrium complexes that exhibit high activity in the ROP of
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Comparative Evaluation of Adsorption of Rare-Earth
2019.10.21 Rare-earth elements (REEs) include scandium, yttrium, and 14 lanthanides.These elements are assigned to a subgroup of the third group of the Periodic table. They are usually considered as a separate group from other heavy metals (HMs) due to their chemical properties, the content and specific accumulation in soils, use, and
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Abundances of the fourteen rare-earth elements, scandium, and yttrium ...
Reochimica et Cosniochimica Acta, 1963, Vol. 27, pp. 577 to 622. Pergamon Press Ltd. Printed in Northern Ireland Abundances of the fourteen rare-earth elements, scandium, and yttrium in meteoritic and terrestrial matter* R. A. SCHMITT, R. H. SMITH, J. E. LASCH, A. W. MOSEN, D. A. OLEHY and J. VASILEVSKISI John Jay Hopkins Laboratory for Pure
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