Lanthanide contraction and pH value controlled structural change in a series of rare earth complexes with p-aminobenzoic acid

2004 ◽  
Vol 702 (1-3) ◽  
pp. 77-83 ◽  
Author(s):  
Hao-Ling Sun ◽  
Chao-Hong Ye ◽  
Xin-Yi Wang ◽  
Jun-Ran Li ◽  
Song Gao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Structural Change ◽  
Ph Value ◽  
Rare Earth Complexes ◽  
Aminobenzoic Acid ◽  
Lanthanide Contraction

Co-fluorescence effect of rare earth complexes with 4-aminobenzoic acid in a silica matrix

2018 ◽  
Vol 51 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Yi Yang ◽  
Heng Liu ◽  
Haixiao Zhang ◽  
Yuetao Yang
Keyword(s):  
Rare Earth ◽  
Silica Matrix ◽  
Rare Earth Complexes ◽  
Aminobenzoic Acid ◽  
Fluorescence Effect

scholarly journals Synthesis, thermoanalytical, spectroscopic study and pyrolysis of solid rare earth complexes (Eu, Gd, Tb and Dy) with p-aminobenzoic acid

2016 ◽  
Vol 121 ◽  
pp. 267-274 ◽  
Author(s):  
J.A. Teixeira ◽  
W.D.G. Nunes ◽  
A.L.C.S. do Nascimento ◽  
T.A.D. Colman ◽  
F.J. Caires ◽  
...  
Keyword(s):  
Rare Earth ◽  
Spectroscopic Study ◽  
Rare Earth Complexes ◽  
Aminobenzoic Acid

(thf)2Ln(Ge9{Si(SiMe3)3}3)2 (Ln = Eu, Sm): the first coordination of metalloid germanium clusters to lanthanides

2021 ◽  
Author(s):  
Andreas Schnepf ◽  
Svetlana Klementyeva ◽  
Claudio Schrenk ◽  
Marat M Khusniyarov ◽  
Minghui Zhang
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Crystallographic Analysis ◽  
Rare Earth Complexes ◽  
Group 14 ◽  
X Ray ◽  
Germanium Clusters

We report the synthesis, structure and magnetic properties of the first rare earth complexes of metalloid group 14 clusters [(thf)2Ln(Ge9Hyp3)2] (Ln = Eu, Sm, Hyp = Si(SiMe3)3). X-ray crystallographic analysis...

scholarly journals Separation of Radionuclides from a Rare Earth-Containing Solution by Zeolite Adsorption

Minerals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 20
Author(s):  
Deniz Talan ◽  
Qingqing Huang
Keyword(s):  
Rare Earth ◽  
Rare Earths ◽  
Contact Time ◽  
Separation Efficiency ◽  
Ph Value ◽  
Solid Phase ◽  
Separation Performance ◽  
Solution Ph ◽  
Zeolite Sample ◽  
Alternative Sources

The increasing industrial demand for rare earths requires new or alternative sources to be found. Within this context, there have been studies validating the technical feasibility of coal and coal byproducts as alternative sources for rare earth elements. Nonetheless, radioactive materials, such as thorium and uranium, are frequently seen in the rare earths’ mineralization, and causes environmental and health concerns. Consequently, there exists an urgent need to remove these radionuclides in order to produce high purity rare earths to diversify the supply chain, as well as maintain an environmentally-favorable extraction process for the surroundings. In this study, an experimental design was generated to examine the effect of zeolite particle size, feed solution pH, zeolite amount, and contact time of solid and aqueous phases on the removal of thorium and uranium from the solution. The best separation performance was achieved using 2.50 g of 12-µm zeolite sample at a pH value of 3 with a contact time of 2 h. Under these conditions, the adsorption recovery of rare earths, thorium, and uranium into the solid phase was found to be 20.43 wt%, 99.20 wt%, and 89.60 wt%, respectively. The Freundlich adsorption isotherm was determined to be the best-fit model, and the adsorption mechanism of rare earths and thorium was identified as multilayer physisorption. Further, the separation efficiency was assessed using the response surface methodology based on the development of a statistically significant model.

Rare earth complexes of chiral unsymmetrical hexaazamacrocycles

Polyhedron ◽  
2021 ◽  
Vol 198 ◽  
pp. 115057
Author(s):  
Katarzyna Wolska ◽  
Jan Janczak ◽  
Paula Gawryszewska ◽  
Jerzy Lisowski
Keyword(s):  
Rare Earth ◽  
Rare Earth Complexes

Rare-earth complexes with anti-inflammatory drug sulindac: synthesis, characterization, spectroscopic and in vitro biological studies

2021 ◽  
pp. 120516
Author(s):  
Renan Barrach Guerra ◽  
Diogo Alves Gálico ◽  
Thais Fernanda de Campos Fraga-Silva ◽  
Julia Aguiar ◽  
James Venturini ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Complexes ◽  
Inflammatory Drug ◽  
Biological Studies ◽  
Anti Inflammatory
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