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Extraction of Lanthanides(III) with N,N′-dimethyl-N,N′-dihexyl-3-oxapentamide

Yan Zhang

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Abstract

The extractability and the extraction mechanism of lanthanides(Ⅲ) with N,N′-dimethyl-N,N′-dihexyl-3-oxapentamide (DMDHOPDA) in chloroform from nitric acid solution have been studied.The influence of the concentration of nitric acid and amido podand,and also the temperature on the extraction has been considered.The stoichiometry of the extraction species is M(NO3)3·3DMDHOPDA (M=La,Eu,Gd,Dy,Ho,Er).The distribution ratio decreases with the increase in the temperature.The extraction reaction is exothermic.The equilibrium constant and thermal physical constant have been calculated.The IR spectra of extracted species was also studied.

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What this paper is about

The extractability and the extraction mechanism of lanthanides(Ⅲ) with N,N′-dimethyl-N,N′-dihexyl-3-oxapentamide (DMDHOPDA) in chloroform from nitric acid solution have been studied.The influence of the concentration of nitric acid and amido podand,and also the temperature on the extraction has been considered.The stoichiometry of the extraction species is M(NO3)3·3DMDHOPDA (M=La,Eu,Gd,Dy,Ho,Er).The distribution ratio decreases with the increase in the temperature.The extraction reaction is exothermic.The equilibrium constant and thermal physical constant have been calculated.The IR spectra of extracted species was also studied.

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Available abstract

The extractability and the extraction mechanism of lanthanides(Ⅲ) with N,N′-dimethyl-N,N′-dihexyl-3-oxapentamide (DMDHOPDA) in chloroform from nitric acid solution have been studied.The influence of the concentration of nitric acid and amido podand,and also the temperature on the extraction has been considered.The stoichiometry of the extraction species is M(NO3)3·3DMDHOPDA (M=La,Eu,Gd,Dy,Ho,Er).The distribution ratio decreases with the increase in the temperature.The extraction reaction is exothermic.The equilibrium constant and thermal physical constant have been calculated.The IR spectra of extracted species was also studied.

Key concepts: Extraction (chemistry), Nitric acid, Lanthanide, Stoichiometry, Chemistry, Chloroform, Equilibrium constant, Exothermic reaction

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Extraction of Lanthanides(III) with N,N′-dimethyl-N,N′-dihexyl-3-oxapentamide — Research Paper | ScholarLens