Preparation of pyrrolidinyl diglycolamide bonded silica particles and its rare earth separation properties.
J Chromatogr A
; 1681: 463396, 2022 Oct 11.
Article
en En
| MEDLINE
| ID: mdl-36058080
ABSTRACT
The separation of rare earth elements by solid phase containing diglycolamide-type ligands is a hot topic. In this study, 2-[2-oxo-2-(1-pyrrolidinyl)ethoxy]acetic acid (PYRDGA) was synthesized and attached to the silica. The binding strength of SiO2@PYRDGA for rare earths showed a single increasing trend with the radius of rare earth atoms. IR and XPS spectra demonstrated that carbonyl oxygen and ether bond oxygen are binding sites for rare earth ions. SiO2@PYRDGA was used for the chromatographic separation of REEs, and the primary separation of 16 REEs was achieved at pH = 2.0 using HNO3 solution as the eluent, and La, Ce, Pr, Nd, Sm, and Eu reached the baseline separation level.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Dióxido de Silicio
/
Metales de Tierras Raras
Idioma:
En
Revista:
J Chromatogr A
Año:
2022
Tipo del documento:
Article
País de afiliación:
China