α-Branched Tertiary Carboxylic Acid Hydrazides as Extractants of Rare-Earth Metal Ions from Sulfate Media

Autor:	T. D. Batueva, V. A. Nikitina, A. V. Radushev
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Lanthanide Stripping (chemistry) General Chemical Engineering Metal ions in aqueous solution Carboxylic acid Hydrazine Extraction (chemistry) General Chemistry Hydrazide chemistry.chemical_compound chemistry Sulfate Nuclear chemistry
Zdroj:	Russian Journal of Applied Chemistry. 94:595-600
ISSN:	1608-3296 1070-4272
Popis:	Derivatives of hydrazine and α-branched tertiary carboxylic acids of fractions C10 and C15–C19: 1,2-diacylhydrazines C10, hydrazides C15 –C19, N ′,N-dimethylhydrazides C15–C19, N ′,N ′-dimethylhydrazides C10 and hydrazides C10 in the form of 0.1–0.5 M solutions in kerosene were tested as extractants of lanthanide ions Y, La, Ce, Sm, Er, and Yb in acidic aqueous media. The best extraction properties were exhibited by hydrazide C15–C19. The conditions and the number of stages of the extraction (from solutions containing 0.5 M H2SO4) and stripping (stripping agent 5 M HCl) were determined using La3+ as an example, until the stripping was saturated (up to 43 g L–1 La3+). The distribution constants (D) and separation (β) were calculated for the listed lanthanides.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c306d73008b8884d19c56613f09f6965 https://doi.org/10.1134/s1070427221050062 Zobrazit plný text záznamu Full text from SpringerLink