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Abundances of the fourteen rare-earth elements,

Abundances of the fourteen rare-earth elements, scandium, and yttrium in meteoritic and terrestrial matter (REE) (Pm excluded) plus Sc and Y by neutron-activation analysis in nineteen meteorites and in three terrestrial specimens. The meteorites investigated included eleven chondrites (1 carbonaceous, 2 pigeonitic, 2 hypersthenic, 3

Separation of Scandium from Yttrium, Lanthanum, and the

2002-5-1  Separation of trivalent rare earths plus sc(iii) from al, ga,in, tl, fe, ti, u and other elements by cation-exchange chromatography. Analytica Chimica Acta 1966, 34, 387-393. DOI: 10.1016/S0003-2670(00)89063-7. Rokuro Kuroda, Yoshihito Nakagomi, Koji Ishida. The separation of scandium by cation exchange in acid ammonium sulfate media.

The magnetic properties of high purity scandium, yttrium

2020-10-13  Thus there are 14 lanthanides plus scandium, yttrium and lan­ thanum for a total of 17 rare earths. The study of the magnetic properties of the rare earth metals and alloys has commanded a great deal of interest pri­ marily because most of these elements have at least one un­ paired 4f electron which gives rise to large magnetic moments.

Scandium the Outlier Rare Earth InvestorIntel

2014-6-24  A Bit of Background: Scandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic element, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanoids. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia

Thermogravimetric investigation of scandium, yttrium and

Thermolysis curves for scandium, yttrium, lanthanum, cerium(III), neodymium, samarium, gadolinium, dysprosium and erbium diliturates are described, Sc

Rare Earth Elements MIT

2012-12-11  Overview. The rare earth elements (REEs) are comprised of the lanthanide elements plus scandium and yttrium, which have similar physical properties and are often found in the same ores and deposits. Specifically, REEs include the light REEs (LREEs) such as lanthanum, cerium, praseodymium, neodymium, samarium, europium, and the heavy REEs (HREEs

First principles study of scandium nitride and yttrium

2015-9-1  In this study computations pertaining to structural, electronic as well as the optical properties of Scandium Nitride (ScN), Yttrium Nitride (YN) and their mutual alloying (Sc x Y 1− x N), for x = 0.25, 0.50, 0.75, are presented. These computations are carried out by employing the full potential (FP) linearized augmented plane wave (LAPW

Rare earths, the lanthanides, yttrium and scandium

Rare Earth Element (REE) is a unique group of metals which mainly comprises seventeen (17) elements, which fifteen (15) elements from the lanthanides group plus Scandium and Yttrium.

Yttrium and scandium complexes of a bulky bis

2014-10-1  The phosphinimine P–N contacts in 12 and 13 (ranging from 1.608(2) to 1.619(4) Å) are longer than those in 8 and 11 (ranging from 1.549(3) to 1.585(2) Å); this elongation is indicative of strong electron donation of the phosphinimine functionality to the scandium and yttrium metal centers, which is also reflected in the downfield chemical

Rare Earth Elements: The Global Supply Chain

2016-10-21  There are 17 rare earth elements (REEs), 15 within the chemical group called lanthanides, plus yttrium and scandium. The lanthanides consist of the following: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium,

Scandium and Yttrium ResearchGate

This chapter reviews the literature reported during 2011 on scandium, yttrium and the lanthanide elements. Read more. Article. Scandium, Yttrium and the Lanthanoids. September 2006 · ChemInform.

Separation of Scandium from Yttrium, Lanthanum, and the

2002-5-1  Separation of trivalent rare earths plus sc(iii) from al, ga,in, tl, fe, ti, u and other elements by cation-exchange chromatography. Analytica Chimica Acta 1966, 34, 387-393. DOI: 10.1016/S0003-2670(00)89063-7. Rokuro Kuroda, Yoshihito Nakagomi, Koji Ishida. The separation of scandium by cation exchange in acid ammonium sulfate media.

Thermogravimetric investigation of scandium, yttrium and

Thermolysis curves for scandium, yttrium, lanthanum, cerium(III), neodymium, samarium, gadolinium, dysprosium and erbium diliturates are described, Sc

First principles study of scandium nitride and yttrium

2015-9-1  In this study computations pertaining to structural, electronic as well as the optical properties of Scandium Nitride (ScN), Yttrium Nitride (YN) and their mutual alloying (Sc x Y 1− x N), for x = 0.25, 0.50, 0.75, are presented. These computations are carried out by employing the full potential (FP) linearized augmented plane wave (LAPW

Rare Earth Elements MIT

2012-12-11  Overview. The rare earth elements (REEs) are comprised of the lanthanide elements plus scandium and yttrium, which have similar physical properties and are often found in the same ores and deposits. Specifically, REEs include the light REEs (LREEs) such as lanthanum, cerium, praseodymium, neodymium, samarium, europium, and the heavy REEs (HREEs

Rare Earth Elements: The Global Supply Chain

2016-10-21  There are 17 rare earth elements (REEs), 15 within the chemical group called lanthanides, plus yttrium and scandium. The lanthanides consist of the following: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium,

Yttrium and scandium complexes of a bulky bis

2014-10-1  The phosphinimine P–N contacts in 12 and 13 (ranging from 1.608(2) to 1.619(4) Å) are longer than those in 8 and 11 (ranging from 1.549(3) to 1.585(2) Å); this elongation is indicative of strong electron donation of the phosphinimine functionality to the scandium and yttrium metal centers, which is also reflected in the downfield chemical

Scandium, yttrium, and lanthanide contents in soil from

2019-1-3  Scandium, yttrium, and lanthanide contents in soil from Serbia and their accumulation in the mushroom Macrolepiota procera (Scop.) Singer with 1.0% v/v nitric acid and reversed osmosis ultra-pure water with a resistance of 18.2 MΩ/cm obtained from a MilliQ plus system (Millipore). Also, standard reference material SRM 1633C (NIST) and

Developing Potentiometric Sensors for Scandium

2021-9-1  Rare Earth Elements (REEs) are 15 elements of the lanthanide group, plus scandium and yttrium, which belong to the actinide group. REEs have many benefits in

Yttrium vs Scandium metalsparenature

Yttrium vs Scandium

Rare Earth Elements MIT

2012-12-11  Overview. The rare earth elements (REEs) are comprised of the lanthanide elements plus scandium and yttrium, which have similar physical properties and are often found in the same ores and deposits. Specifically, REEs include the light REEs (LREEs) such as lanthanum, cerium, praseodymium, neodymium, samarium, europium, and the heavy REEs (HREEs

Yttrium vs Scandium metalsparenature

Yttrium vs Scandium

Special issue on rare earths Home UNCTAD

2020-9-2  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 63 or “heavy” when it

Rare Earth Elements Rare Element Resources

Rare earth elements are a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium. Scandium and yttrium are considered rare earth elements since they tend to occur in the same ore deposits as

Earth-metals, rare; scandium and yttrium, whether or not

In 2019, Top exporters of Earth-metals, rare; scandium and yttrium, whether or not intermixed or interalloyed are China ($116,038.79K,6,850,020 Kg), Thailand

ANALYTICAL APPLICATIONS OF THE FLAME SPECTRA OF

The rare earth elements, including scandium and yttrium, emit intense line spectra when absolute ethanol solutions of rare-earth halide or perchlorate salts are aspirated into fuel-rich, oxy-acetylene flames. Recordings of the spectra are given, along with the exact wavelengths of

Scandium Element information, properties and uses

Scandium, atomic number 21. It is the first of the transition metals, and its discovery is entwined with that of vertical neighbours yttrium and lanthanum. The Swedish island of Resarö, near Stockholm, became a hotbed of elemental discovery in the late

Scandium, yttrium, and lanthanide contents in soil from

2019-1-3  The mobility (fractionation) of rare earth elements (REEs) and their possible impacts on ecosystems are still relatively unknown. Soil samples were collected from two sites in central Serbia, an unpolluted mountain region (site 1) and a forest near a city (site 2).

Dissolved scandium, yttrium, and lanthanum in the surface

1 Introduction. Recent investigation has shown that scandium (Sc), yttrium (Y), and lanthanum (La), three of the four elements generally considered to be in Group 3 of the periodic table, have contrasting reactivity in the ocean [Parker et al., 2016]: Sc is a

THE CYCLOPENTADIENIDES OF SCANDIUM, YTTRIUM,

The thermal decomposition of Y, Sc, La, Ce, Pr, Nd, Sm, and Gd chloride hydrates was studied on the thermobalance. The salts began to lose water of hydration in the 55 to ll0 deg C temperature range.