Novel mixed ligand coordination compounds of some rare earth metal cations containing acesulfamato/N,N-diethylnicotinamide

Synthesis of complex compounds of 2-(methylamino) benzoic acid (L) with ions of samarium (III), europium (III), terbium (III), gadolinium (III) and dysprosium (III). According to elemental analysis and thermogravimetry, the complexes obtained are hydrates of the composition LnL3 • nH2O, where n = 1-5. The area of their thermal stability ranges from 100 ° C to 240 ° C. Electronic and infrared absorptionspectra of the ligand and complexeswith rare-earth metal ions were measured. According to the IR spectra, coordination of the ligand with the metal ion is carried out on the carboxyl group. The carboxyl group is coordinated bidentately. A mercury lampwith a wavelength of 248 nm was used to excite the luminescence. The highest luminescence intensity is observed for the coordination compounds Eu3 +, Tb3 +, and Dy3 +

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Synthesis of mesoporous silica-phosphate hybrids and their adsorption competency for rare earth metal cations

Journal of the Ceramic Society of Japan ◽

10.2109/jcersj2.17066 ◽

2017 ◽

Vol 125 (10) ◽

pp. 732-736 ◽

Cited By ~ 2

Author(s):

Fumitake OKABE ◽

Chinami MOCHIZUKI ◽

Takahiro TAKEI ◽

Sayaka YANAGIDA ◽

Akira MIURA ◽

...

Keyword(s):

Rare Earth ◽

Mesoporous Silica ◽

Rare Earth Metal ◽

Earth Metal ◽

Metal Cations

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New coordination compounds of some rare-earth metal complexes with sulfur and nitrogen Schiff bases and theirin vitroantibacterial and antifungal properties

Journal of Sulfur Chemistry ◽

10.1080/17415990903173529 ◽

2010 ◽

Vol 31 (1) ◽

pp. 61-70 ◽

Cited By ~ 5

Author(s):

Ritu Singh ◽

Krishna Sharma ◽

R. V. Singh

Keyword(s):

Rare Earth ◽

Metal Complexes ◽

Schiff Bases ◽

Rare Earth Metal ◽

Coordination Compounds ◽

Earth Metal ◽

Antifungal Properties ◽

Rare Earth Metal Complexes

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Justification of the prospects of using phosphatotitanium ion exchangers for extracting rare earth metals from solutions of radionuclides

Butlerov Communications ◽

10.37952/roi-jbc-01/19-59-9-58 ◽

2019 ◽

Vol 59 (9) ◽

pp. 58-65

Author(s):

Vladimir I. Ivanenko ◽

◽

Roman I. Korneykov ◽

Nikita V. Zharov ◽

◽

...

Keyword(s):

Rare Earth ◽

Ion Exchange ◽

Rare Earth Element ◽

Rare Earth Metal ◽

Earth Element ◽

Earth Metal ◽

Metal Cations ◽

Sorption Properties ◽

Ion Exchangers ◽

Hydrated Titanium

The results of a study of the sorption properties of ion-exchange materials based on hydrated titanium (IV) oxohydroxophosphates with respect to rare-earth metal cations are presented in this paper. A high affinity of the latters for the sorption matrix in nitrate media was established, which is determined by the ion radius of the sorbate and increases in the series Y3+  Gd3+  Eu3+ Sm3+ Nd3+ Ce3+ at pH=4 and La3+  Ce3+  Y3+  Yb3+ at pH=1.5 for all the studied sample compositions. It was experimentally shown that the doping of sorbents based on titanium (IV) oxyhydroxophosphates with zirconium (IV) cations, which differs from titanium (IV) in acid-base properties, leads to an increase in the sorption properties of ion exchangers, which allows the use of modified compositions for sorption of rare-earth metal cations from solutions with high acidity. It was established that partial dehydration of the sorption matrix and increase in temperature increase the sorption ability of ion-exchange materials. Sorption extraction of rare-earth element cations by sorbents of various compositions was carried out from solutions simulating real technological objects generated during the processing of nuclear fuel waste. It is shown that sorption materials based on hydrated titanium (IV) oxohydroxophosphates are promising ion exchangers for the extraction of rare-earth element cations from technological solutions with complex chemical composition. It was established that unmodified sorbent compositions are promising for the selective extraction of rare-earth element cations, while modified compositions are of interest for group sorption. The thermal treatment of a sorbent saturated with radioisotopes leads to the formation of crystalline insoluble mineral-like compounds, which ensures reliable immobilization of the sorbed components during long-term storage of the spent product.

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