scholarly journals Cover Feature: Efficient Separation of Light Lanthanides(III) by Using Bis‐Lactam Phenanthroline Ligands (Chem. Eur. J. 25/2019)

2019 ◽  
Vol 25 (25) ◽  
pp. 6247-6247
Author(s):  
Mary R. Healy ◽  
Alexander S. Ivanov ◽  
Yana Karslyan ◽  
Vyacheslav S. Bryantsev ◽  
Bruce A. Moyer ◽  
...  
Keyword(s):  
Efficient Separation ◽  
Light Lanthanides ◽  
Phenanthroline Ligands

scholarly journals Efficient Separation of Light Lanthanides(III) by Using Bis‐Lactam Phenanthroline Ligands

2019 ◽  
Vol 25 (25) ◽  
pp. 6326-6331 ◽  
Author(s):  
Mary R. Healy ◽  
Alexander S. Ivanov ◽  
Yana Karslyan ◽  
Vyacheslav S. Bryantsev ◽  
Bruce A. Moyer ◽  
...  
Keyword(s):  
Efficient Separation ◽  
Light Lanthanides ◽  
Phenanthroline Ligands

scholarly journals Sequestration of trivalent americium and lanthanide nitrates with bis-lactam-1,10-phenanthroline ligand in a hydrocarbon solvent

RSC Advances ◽  
2019 ◽  
Vol 9 (46) ◽  
pp. 26537-26541 ◽  
Author(s):  
Yana Karslyan ◽  
Frederick V. Sloop ◽  
Laetitia H. Delmau ◽  
Bruce A. Moyer ◽  
Ilja Popovs ◽  
...  
Keyword(s):  
Acidic Medium ◽  
Hydrocarbon Solvent ◽  
Efficient Separation ◽  
Lanthanide Nitrates ◽  
Light Lanthanides ◽  
Phenanthroline Ligand ◽  
Aqueous Acidic Medium

Efficient separation of trivalent americium and light lanthanides from aqueous acidic medium into hydrocarbon solvent using BLPhen extractant.

A Novel Ion-pair Strategy for Efficient Separation of Lithium Isotopes Using Crown Ethers

2021 ◽  
pp. 118989
Author(s):  
Li Cui ◽  
Shasha Li ◽  
Jin Kang ◽  
Caixia Yin ◽  
Yanxia Guo ◽  
...  
Keyword(s):  
Crown Ethers ◽  
Ion Pair ◽  
Lithium Isotopes ◽  
Efficient Separation

Efficient trace-scale extraction method of reactor produced 199Au adequate for nuclear medicine applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mohamed F. Attallah ◽  
Ahmed M. Shahr El-Din ◽  
Mohamed A. Gizawy ◽  
Amal M. I. Ali
Keyword(s):  
Aqueous Media ◽  
Selective Extraction ◽  
Extraction Process ◽  
High Yield ◽  
High Recovery ◽  
Rapid Separation ◽  
Efficient Separation ◽  
Liquid Liquid Extraction ◽  
Cyanex 302 ◽  
Cyanex 923

Abstract Production of no carrier-added (NCA) 199Au through natPt(n, γ) reaction and subsequent purification using liquid-liquid extraction from other radioisotopes is studied in the context of theranostic application. Comparative separation of NCA 199Au after dissolution of activated Pt target using three Cyanex compounds (Cyanex-272, Cyanex-302 and Cyanex-923) is evaluated. The extraction process is optimized in terms of the type of extractant, the concentration of extractant, extraction time and aqueous media (HNO3, NH4OH). Among these extractants, the Cynaex-923 is efficient and promising for rapid separation and production of NCA 199Au from HNO3 by high extraction %. Selective extraction of 199Au from other Pt and Ir radioisotopes is observed. High recovery of 199Au was obtained in the case of Cyanex-923 using 0.05 M thiourea dissolved in HCl or 2 M NaOH. Our results find the Cyanex-923 as a promising extractant for efficient separation of 199Au from irradiated Pt target with high yield (99%).

Ligand-Driven Advances in Iridium Catalyzed sp3 C-H Borylation: 2,2’-Dipyridylarylmethane

Synlett ◽  
2020 ◽  
Author(s):  
Margaret R Jones ◽  
Nathan D. Schley
Keyword(s):  
Recent Work ◽  
Organic Synthesis ◽  
Functional Group ◽  
Reaction Conditions ◽  
Recent Advances ◽  
Additional Ligand ◽  
Limited Application ◽  
Hydrocarbon Substrates ◽  
Phenanthroline Ligands

The field of catalytic C-H borylation has grown considerably since its founding, providing a means for the preparation of synthetically versatile organoborane products. While sp2 C-H borylation methods have found widespread and practical use in organic synthesis, the analogous sp3 C-H borylation reaction remains challenging and has seen limited application. Existing catalysts are often hindered by incomplete consumption of the diboron reagent, poor functional group tolerance, harsh reaction conditions, and the need for excess or neat substrate. These challenges acutely affect C-H borylation chemistry of unactivated hydrocarbon substrates, which has lagged in comparison to methods for the C-H borylation of activated compounds. Herein we discuss recent advances in sp3 C-H borylation of undirected substrates in the context of two particular challenges: (1) utilization of the diboron reagent and (2) the need for excess or neat substrate. Our recent work on the application of dipyridylarylmethane ligands in sp3 C-H borylation has allowed us to make contributions in this space and has presented an additional ligand scaffold to supplement traditional phenanthroline ligands.

scholarly journals Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2054
Author(s):  
Loan T. T. Nguyen ◽  
Hang T. T. Nguyen ◽  
Thieng H. Le ◽  
Lan T. H. Nguyen ◽  
Hai Q. Nguyen ◽  
...  
Keyword(s):  
Grain Size ◽  
Photocatalytic Activity ◽  
Dye Removal ◽  
Catalyst Loading ◽  
Separation Mechanism ◽  
Light Radiation ◽  
Efficient Separation ◽  
Oxidant Concentration ◽  
Znfe2o4 Nanoparticles ◽  
Removal Efficiencies

In this study, nanocrystalline ZnNdxFe2−xO4 ferrites with x = 0.0, 0.01, 0.03 and 0.05 were fabricated and used as a catalyst for dye removal potential. The effect of Nd3+ ions substitution on the structural, optical and photo-Fenton activity of ZnNdxFe2−xO4 has been investigated. The addition of Nd3+ ions caused a decrease in the grain size of ferrites, the reduction of the optical bandgap energies and thus could be well exploited for the catalytic study. The photocatalytic activity of the ferrite samples was evaluated by the degradation of Rhodamine B (RhB) in the presence of H2O2 under visible light radiation. The results indicated that the ZnNdxFe2−xO4 samples exhibited higher removal efficiencies than the pure ZnFe2O4 ferrites. The highest degradation efficiency was 98.00%, attained after 210 min using the ZnNd0.03Fe1.97O4 sample. The enhanced photocatalytic activity of the ZnFe2O4 doped with Nd3+ is explained due to the efficient separation mechanism of photoinduced electron and holes. The effect of various factors (H2O2 oxidant concentration and catalyst loading) on the degradation of RhB dye was clarified.

A simple, fast and low-cost method for the efficient separation of hydrocarbons from oily sludge

2021 ◽  
Vol 413 ◽  
pp. 125328
Author(s):  
Yasser Hamidi ◽  
Seyed Ahmad Ataei ◽  
Amir Sarrafi
Keyword(s):  
Low Cost ◽  
Oily Sludge ◽  
Efficient Separation
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