The role of β-diketones in the extraction of cobalt (II) and nickel (II) ions

Mineral Engineering Conference

Witt, K.^1 ; Radzyminska-Lenarcik, E.^1

Faculty of Chemical Technology and Engineering, UTP University of Sciences and Technology, Seminaryjna 3, Bydgoszcz

85-326, Poland^1

关键词: Dichloromethane solutions;    Dissociation constant;    Liquid-liquid extraction;    Nitrate solutions;    Potentiometric study;    Spectro-photometric method;    Stability constants;    Two-component;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/427/1/012004/pdf
DOI  :  10.1088/1757-899X/427/1/012004

来源: IOP

【 摘 要 】

β-diketones were used for Co(II) and Ni(II) separation from nitrate solutions by liquid-liquid extraction method. Pentane-2,4-dione (1), 3-methyl-pentane-2,4-dione (2) and 3-ethyl-pentane-2,4-dione (3), all in dichloromethane solution were extractants in this process. Potentiometric studies were used to determinate dissociation constants of investigated ligands. Stability constants of the created complexes were found by spectrophotometric methods and the increased in the order of 2