scholarly journals Extraction of actinides by tertiary amines in room temperature ionic liquids: evidence for anion exchange as a major process at high acidity and impact of acid nature

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 35821-35829 ◽  
Author(s):  
Seraj A. Ansari ◽  
Prasanta K. Mohapatra ◽  
Valérie Mazan ◽  
Isabelle Billard

The extraction of U(vi) and Pu(iv) by tri-alkyl amines in room temperature ionic liquids, [Cnmim][Tf2N] (where, n = 4, 6 or 8) follow anion exchange mechanism.

2003 ◽  
Vol 125 (50) ◽  
pp. 15466-15473 ◽  
Author(s):  
Mark P. Jensen ◽  
Jörg Neuefeind ◽  
James V. Beitz ◽  
S. Skanthakumar ◽  
L. Soderholm

2018 ◽  
Vol 11 (06) ◽  
pp. 1840009 ◽  
Author(s):  
Alena I. Komayko ◽  
Ekaterina A. Arkhipova ◽  
Anton S. Ivanov ◽  
Konstantin I. Maslakov ◽  
Stepan Yu. Kupreenko ◽  
...  

N-ethyl-N-(2-methoxyethyl)-morpholinium bis(trifluoromethylsulfonyl)imide [Et(MEO)Mor][TFSI], N,N-bis(2-methoxyethyl)-morpholinium bis(trifluoromethylsulfonyl)imide [Bis(MEO)Mor][TFSI] and N,N-bis(2-methoxyethyl)-piperidinium bis(trifluoromethylsulfonyl)imide [Bis(MEO)Pip][TFSI] room-temperature ionic liquids (RTILs) were synthesized and their electrochemical properties were studied. Three stages of synthesis of RTILs were used, including the alkylation of secondary and tertiary amines and the anion exchange. The structure of RTILs was confirmed by 1H, [Formula: see text]C, H,H-COSY, 1H–[Formula: see text]C correlation spectroscopy NMR and XPS. Three main approaches based on the Arrhenius, Litovitz, and Vogel–Fulcher–Tammann equations were used to analyze the ion transport properties of RTILs. In addition, the electrical conductivity of the binary acetonitrile solutions of RTILs was studied. It was found that the activation energy and conductivity of RTILs depended on their polarity and ability to associate which affects the mobility of charge carriers and viscosity of the system.


2015 ◽  
Vol 53 (5) ◽  
pp. 369-378 ◽  
Author(s):  
Takatsugu Endo ◽  
Mamoru Imanari ◽  
Yuki Hidaka ◽  
Hiroko Seki ◽  
Keiko Nishikawa ◽  
...  

Author(s):  
Christoph Wiedemann ◽  
David Fushman ◽  
Frank Bordusa

Ionic liquids (ILs) have gained a lot of attention as alternative solvents in many fields of science in the last two decades. It is known that the type of anion...


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