Recovery of Scandium by Crystallization Techniques
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sustainable Metallurgy"
DOI: 10.1007/s40831-019-00210-4
Abstract: Bauxite residues, i.e., red mud, can be processed to recover various valuable end products, while reducing the environmental impact of the waste. Scandium is one of the valuable elements in bauxite residues. It is possible… read more here.
Keywords: crystallization techniques; strip liquor; crystallization; scandium ... See more keywords
Selective recovery of vanadium and scandium by ion exchange with D201 and solvent extraction using P507 from hydrochloric acid leaching solution of red mud.
Sign Up to like & getrecommendations! Published in 2017 at "Chemosphere"
DOI: 10.1016/j.chemosphere.2017.02.083
Abstract: D201 resin and P507 extractant diluted with sulfonated kerosene were used to respectively separate vanadium and scandium, and impurity ions from hydrochloric acid leaching solution of red mud. More than 99% of vanadium was selectively… read more here.
Keywords: acid leaching; leaching solution; solution; hydrochloric acid ... See more keywords
An innovative process for extracting scandium from nickeliferous laterite ore: Carbothermic reduction followed by NaOH cracking
Sign Up to like & getrecommendations! Published in 2020 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2019.105194
Abstract: Abstract Laterite ores account for >60% of the world's nickel resources. This ore contains considerable amount of scandium, a strategic material in increasingly high demand in various industries. Here, an innovative two-step process was developed… read more here.
Keywords: naoh cracking; process; scandium; innovative process ... See more keywords
Recovery of scandium from KOH sub-molten salt leaching cake of fergusonite
Sign Up to like & getrecommendations! Published in 2019 at "Minerals Engineering"
DOI: 10.1016/j.mineng.2018.11.052
Abstract: Abstract A study was carried out for recovery of scandium from KOH sub-molten salt (SMS) leaching cake of fergusonite. Major metals in the cake were rare earths (RE), K, Th, U and Ca, and minor… read more here.
Keywords: leaching cake; scandium koh; cake; recovery scandium ... See more keywords
Selective separation of Sc(III) and Zr(IV) from the leaching of bauxite residue using trialkylphosphine acids, tertiary amine, tri-butyl phosphate and their mixtures
Sign Up to like & getrecommendations! Published in 2021 at "Separation and Purification Technology"
DOI: 10.1016/j.seppur.2021.119798
Abstract: Abstract The separation of scandium from the solution generated in acid leaching is one of the main challenges for the hydrometallurgical processing of bauxite residue. Several organic extractants were evaluated, being the most prominent phosphine… read more here.
Keywords: selective separation; separation; bauxite residue; scandium ... See more keywords
Selectively recovering scandium from high alkali Bayer red mud without impurities of iron, titanium and gallium
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Rare Earths"
DOI: 10.1016/s1002-0721(17)60992-x
Abstract: Abstract Experimental results here can give some new insights into the mechanism of selective recovery of scandium and sodium from high alkali Bayer red mud (RM) through sulfation-roasting-leaching process. Effects of roasting and leaching conditions… read more here.
Keywords: high alkali; red mud; bayer red; scandium ... See more keywords
Synthesis, Crystal Structure, and Optical Properties of Layered Perovskite Scandium Oxychlorides: Sr2ScO3Cl, Sr3Sc2O5Cl2, and Ba3Sc2O5Cl2.
Sign Up to like & getrecommendations! Published in 2018 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.8b00573
Abstract: We report the successful synthesis of three new Ruddlesden-Popper-type scandium oxychloride perovskites, Sr2ScO3Cl, Sr3Sc2O5Cl2, and Ba3Sc2O5Cl2, by conventional solid-state reaction. Small single crystals of Sr2ScO3Cl were obtained by a self-flux method, and the crystal structure… read more here.
Keywords: crystal structure; sr3sc2o5cl2 ba3sc2o5cl2; geometry; scandium ... See more keywords
Tandem deoxygenative hydrosilation of carbon dioxide with a cationic scandium hydridoborate and B(C6F5)3.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c9dt04323c
Abstract: A scandium hydridoborate complex supported by the dianionic pentadentate ligand B2Pz4Py is prepared via hydride abstraction from the previously reported scandium hydride complex with tris-pentafluorophenyl borane. Exposure of [(B2Pz4Py)Sc][HB(C6F5)3] to CO2 immediately forms [(B2Pz4Py)Sc][HCOOB(C6F5)3] at… read more here.
Keywords: scandium hydridoborate; tandem deoxygenative; c6f5; hydrosilation ... See more keywords
Heterobimetallic scandium-group 10 metal complexes with LM → Sc (LM = Ni, Pd, Pt) dative bonds.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c9dt04369a
Abstract: Heterobimetallic scandium complexes with whole group 10 metals were synthesized. All Sc-LM complexes were characterized by NMR spectroscopy, X-ray diffraction analysis and computational studies, which revealed notable LM → Sc (LM = Ni, Pd, Pt)… read more here.
Keywords: group metal; scandium group; metal complexes; scandium ... See more keywords
Synthesis of allylanilines via scandium-catalysed benzylic C(sp3)-H alkenylation with alkynes.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc02489f
Abstract: The ortho-selective benzylic C(sp3)-H alkenylation of 2-methyl tertiary anilines with internal alkynes has been achieved for the first time by using a half-sandwich scandium catalyst. This protocol provides a straightforward route for the synthesis of… read more here.
Keywords: sp3 alkenylation; benzylic sp3; scandium; synthesis ... See more keywords
Thermionic emission microscopy of scandium thin film dewetting on W(100)
Sign Up to like & getrecommendations! Published in 2018 at "AIP Advances"
DOI: 10.1063/1.5039612
Abstract: Scandium thin films of 5-30 nm thickness deposited on clean W(100) surfaces de-wet from the tungsten surface when heated to temperatures < 0.5 Tmelt. The dewetting temperature and the resulting droplet size are a function… read more here.
Keywords: emission microscopy; microscopy; thermionic emission; film ... See more keywords