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Scarcity of Rare Earth Elements
ChemSusChem, 2013AbstractRare earth elements (REEs) are important for green and a large variety of high‐tech technologies and are, therefore, in high demand. As a result, supply with REEs is likely to be disrupted (the degree of depends on the REE) in the near future. The 17 REEs are divided into heavy and light REEs. Other critical elements besides REEs, identified by
de Boer, M.A., Lammertsma, K.
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1987
Intermetallic phases between tungsten and rare earth elements have only been found for the W-Ce system. Two phases exist in this system, which are formed by peritectic reactions; one of them is believed to be W2Ce, “Elliott” (1965), p. 314.
Wolfgang Kurtz, Hans Vanecek
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Intermetallic phases between tungsten and rare earth elements have only been found for the W-Ce system. Two phases exist in this system, which are formed by peritectic reactions; one of them is believed to be W2Ce, “Elliott” (1965), p. 314.
Wolfgang Kurtz, Hans Vanecek
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Biosorption of Rare Earth Elements
Mineral Processing and Extractive Metallurgy Review, 1998Abstract By using X-ray microanalysis, the mechanism of sorption of rare earth elements (REE) and their localization in cells of Candida utilis were found to depend on the metal ion speciation in solution, the permeability of the cytoplasmic membrane (CPM), and elemental composition of cells.
A.A. Korenevsky +2 more
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MORB alteration: Rare-earth element/non-rare-earth hygromagmaphile element fractionation
Chemical Geology, 1990Abstract We have determined the concentrations of rare-earth elements (REE) and non-rare-earth (RE) hygromagmaphile elements (HYG.E): Y, Zr, Nb, Hf, Ta and Th in fresh and altered basaltic samples recovered from the Atlantic Ocean. Whereas the relative abundances of REE and non-RE HYG.E display continuous chondrite-normalized patterns in fresh ...
P. Bienvenu +4 more
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Rare-Earth Elements in Tektites
Science, 1963The rare-earth element content of three tektites has been determined by neutron activation analysis. The relative abundance patterns are all nearly alike and are identical to the pattern characteristic of well-differentiated terrestrial sediments. Possible consequences of finding this pattern in truly extraterrestrial matter are considered.
L, Haskin, M A, Gehl
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2023
In this section, the elemental forms of rare-earth elements are iron gray to silvery lustrous metals that are typically soft, malleable, ductile, and usually reactive, especially at elevated temperatures or when finely divided. rare-earth elements are examined in terms of physical and chemical properties. This makes them essential components of diverse
Mikail Aslan, Cengiz Bozada
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In this section, the elemental forms of rare-earth elements are iron gray to silvery lustrous metals that are typically soft, malleable, ductile, and usually reactive, especially at elevated temperatures or when finely divided. rare-earth elements are examined in terms of physical and chemical properties. This makes them essential components of diverse
Mikail Aslan, Cengiz Bozada
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Rare-Earth and Transuranic Elements
Physical Review, 1941Verf. zeigt das starke Absinken der Energie und das Schrumpfen der räumlichen Ausdehnung der \(4f\)- bzw. \(5f\)-Eigenfunktion beim Überschreiten der ungefähren Kernladungszahl \(Z = 57\) bzw. \(Z = 92\). Dieses Vorkommnis bedeutet, daß von diesen Ordnungszahlen ab die \(4f\)- bzw. \(5f\)-Bahnen zu inneren Elektronenbahnen werden.
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1971
Mossbauer spectroscopy of the rare-earth elements as a group has gained considerable attention from physicists. Successive addition of 4f-electrons along the series has little influence on many of the chemical properties, which are mainly those of a tripositive cation.
N. N. Greenwood, T. C. Gibb
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Mossbauer spectroscopy of the rare-earth elements as a group has gained considerable attention from physicists. Successive addition of 4f-electrons along the series has little influence on many of the chemical properties, which are mainly those of a tripositive cation.
N. N. Greenwood, T. C. Gibb
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