Results 11 to 20 of about 342,403 (251)

Complexаtion of scandium upon its extraction by N-(2-hydroxy-5-nonylbenzyl)-β-hydroxyethylmethylamine (NBEA-2) from chloride solutions in octanol

Тонкие химические технологии, 2010
Chemical aspects of scandium solvent extraction from its chloride solutions at pH 3.0-4.5 by N-(2-hydroxy-5-nonylbenzyl)-β-hydroxyethylmethylamine solutions in octanol have been studied. The extraction mechanism has been suggested.
D. V. Bychenkov, S. A. Semenov, A. M. Reznik   +2 more
doaj   +1 more source

Cytological alterations and oxidative stress induced by Cerium and Neodymium in lentil seedlings and onion bulbs

Frontiers in Environmental Science, 2022
Rare earth elements (REEs) are a group of 15 elements, the lanthanides and Yttrium and Scandium, with similar chemical and physical properties. Their use for many advanced technological applications remarkably increased in the last decades, and it was ...
Isidora Gjata, Franca Tommasi, Silvana De Leonardis, Nunzio Dipierro, Costantino Paciolla   +4 more
doaj   +1 more source

Preparing Sc-Bearing Master Alloy Using Aluminum–Magnesium Thermoreduction Method

Metals, 2020
In this study, preparation of Al–Mg–Sc master alloy tests were carried out by Al–Mg thermoreduction method. Stirring by blowing argon and pressing with molten salt jar were adopted to reduce scandium segregation and upgrading scandium recovery of ...
Junhui Xiao, Wei Ding, Yang Peng, Tao Chen, Kai Zou   +4 more
doaj   +1 more source

THE ROLE OF SCANDIUM CHLORIDE AND HYDROXIDE COMPLEXES IN THE FORMATION OF SCANDIUM DEPOSITS: INSIGHTS FROM EXPERIMENTS AND MODELING

Economic Geology, 2023
Abstract Although scandium is commonly concentrated to economic levels by magmatic processes, hydrothermal fluids also play an important role in its concentration. Indeed, the most important source of scandium is currently the Bayan Obo deposit in China, where scandium is extracted from hydrothermally produced aegirine.
Wang, Jiaxin, Williams-Jones, Anthony, Timofeev, Alexander, Zhang, Xueni, Liu, Jiajun, Yuan, Shunda   +5 more
openaire   +2 more sources

Scandium bearing open framework materials [PDF]

, 2008
Here I report the hydrothermal chemistry of scandium, examining the behavior of the Sc³⁺ cation in various systems, including phosphates, phosphites, phosphonates and carboxylates.
Miller, Stuart R.
core   +2 more sources

Kinetics of phase transformations in lead scandium tantalate thin films [PDF]

, 2004
The phase transformations from amorphous to pyrochlore to perovskite in lead scandium tantalate (PST) thin films during rapid thermal annealing process (RTA) have been studied.
Donohue, P. P., Whatmore, Roger W., Huang, Zhaorong, Todd, M. A., Battat, J.   +4 more
core   +1 more source

Scandium-Catalyzed Benzylic C(sp³)–H Alkenylation of Tertiary Anilines with Alkynes

, 2022
This work describes the chemo- and stereoselective benzylic C­(sp3)–H alkenylation of tertiary ortho-methyl anilines with internal alkynes using a simple β-diketiminato scandium catalyst.
Xin Xu (11989), Xian Xu (119341), Qianlin Sun (7493477)   +2 more
core   +1 more source

Scandium-Catalyzed Phenol-Directed Construction of 5Carbonyl-4-hydroxybenzofurans via Intramolecular FriedelCrafts Reaction

, 2023
Herein we report a scandium-catalyzed regioselective synthesis of 5-carbonyl-4-hydroxybenzofurans via a phenol-directed intramolecular Friedel–Crafts reaction. This synthetic method was applied for the total synthesis of furanoflavones.
Tetsuhiro Nemoto, Tetsuhiro Nemoto (1508278), Ayahito Kaneki (17289616), Takahito Kuribara (8521005), Yuma Mihara, Yuma Mihara (17289619), Honoka Yuba (17289622), Takahito Kuribara, Ayahito Kaneki, Honoka Yuba   +9 more
core   +1 more source

Selective Scandium Elution from D₂EHPA-Impregnated Ion-Exchange Resin After Metal Loading from Acidic Chloride Solutions. [PDF]

Materials (Basel)
This paper investigates the elution behavior of scandium from D2EHPA (Di-(2-ethylhexyl) phosphoric acid)-impregnated resins that proceed with metal loading from acidic chloride solutions.
Mikeli E, Marinos D, Balomenos E, Panias D.   +3 more
europepmc   +2 more sources

Scandium-Catalyzed Electrochemical Synthesis of α‑Pyridinyl Tertiary Amino Acids and Esters

, 2023
α-Pyridyl tertiary amino acids have potential pharmaceutical applications because of their structural features. However, their synthesis is still highly limited. Herein, we report a straightforward approach for the electrochemical synthesis of tertiary α-
Jiacong Lin (17138501), Weijie Ding (664530), Feng Liu (72874), Xu Cheng (777924)   +3 more
core   +1 more source