The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes
The individual separation of lanthanides is very complex due to the similarities between these elements. Ion-exchange separations with carboxylic acids are widely studied, but the importance of pH is overlooked. This study used citric acid to evaluate Lu and Yb separation with Dowex 50W-X8. The sepa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715622002338 |
| _version_ | 1811178084272963584 |
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| author | Cynthia Cáceres-Rivero Bertha Juli Ramos-Trujillo Yadberto Farfán Jose Luis Solis Patricia Bedregal |
| author_facet | Cynthia Cáceres-Rivero Bertha Juli Ramos-Trujillo Yadberto Farfán Jose Luis Solis Patricia Bedregal |
| author_sort | Cynthia Cáceres-Rivero |
| collection | DOAJ |
| description | The individual separation of lanthanides is very complex due to the similarities between these elements. Ion-exchange separations with carboxylic acids are widely studied, but the importance of pH is overlooked. This study used citric acid to evaluate Lu and Yb separation with Dowex 50W-X8. The separation was monitored by X-ray fluorescence. Five new structures of Lu and Yb citrates are proposed. Better separation occurs when the pH of the ligand is pH 4.5, where a mononuclear structure is formed. Conversely, polynuclear structures are formed at higher pH, and separation fails. X-ray diffraction reveals different phases at each pH value, and FTIR results support the proposed structures. |
| first_indexed | 2024-04-11T06:13:30Z |
| format | Article |
| id | doaj.art-db3b5bd579f941059f43a24d91d6be6d |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-04-11T06:13:30Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-db3b5bd579f941059f43a24d91d6be6d2022-12-22T04:41:09ZengElsevierResults in Chemistry2211-71562022-01-014100514The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexesCynthia Cáceres-Rivero0Bertha Juli Ramos-Trujillo1Yadberto Farfán2Jose Luis Solis3Patricia Bedregal4Laboratorio de Espectrometría de Rayos X. Instituto Peruano de Energía Nuclear. Centro Nuclear Oscar Miró Quesada de la Guerra, Av. José Saco Km. 13, Carabayllo, Lima, Peru; Facultad de Ciencias, Universidad Nacional de Ingeniería. Av. Túpac Amaru 210. Rímac. Apartado 1301, Lima, Peru; Corresponding author at: Laboratorio de Espectrometría de Rayos X. Instituto Peruano de Energía Nuclear, Carabayllo, Lima, PeruPlanta de Producción de Radioisótopos. Instituto Peruano de Energía Nuclear. Centro Nuclear Oscar Miró Quesada de la Guerra, Av. José Saco Km. 13, Carabayllo, Lima, PeruPlanta de Producción de Radioisótopos. Instituto Peruano de Energía Nuclear. Centro Nuclear Oscar Miró Quesada de la Guerra, Av. José Saco Km. 13, Carabayllo, Lima, PeruFacultad de Ciencias, Universidad Nacional de Ingeniería. Av. Túpac Amaru 210. Rímac. Apartado 1301, Lima, PeruLaboratorio de Técnicas Analíticas. Instituto Peruano de Energía Nuclear. Centro Nuclear Oscar Miró Quesada de la Guerra, Av. José Saco Km. 13, Carabayllo, Lima, PeruThe individual separation of lanthanides is very complex due to the similarities between these elements. Ion-exchange separations with carboxylic acids are widely studied, but the importance of pH is overlooked. This study used citric acid to evaluate Lu and Yb separation with Dowex 50W-X8. The separation was monitored by X-ray fluorescence. Five new structures of Lu and Yb citrates are proposed. Better separation occurs when the pH of the ligand is pH 4.5, where a mononuclear structure is formed. Conversely, polynuclear structures are formed at higher pH, and separation fails. X-ray diffraction reveals different phases at each pH value, and FTIR results support the proposed structures.http://www.sciencedirect.com/science/article/pii/S2211715622002338Coordination chemistryLutetiumIon exchangeYtterbiumLanthanide citrateLanthanide complex |
| spellingShingle | Cynthia Cáceres-Rivero Bertha Juli Ramos-Trujillo Yadberto Farfán Jose Luis Solis Patricia Bedregal The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes Results in Chemistry Coordination chemistry Lutetium Ion exchange Ytterbium Lanthanide citrate Lanthanide complex |
| title | The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes |
| title_full | The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes |
| title_fullStr | The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes |
| title_full_unstemmed | The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes |
| title_short | The role of pH in the separation of Lu and Yb by ion-exchange explained by novel chemical structures of lanthanide complexes |
| title_sort | role of ph in the separation of lu and yb by ion exchange explained by novel chemical structures of lanthanide complexes |
| topic | Coordination chemistry Lutetium Ion exchange Ytterbium Lanthanide citrate Lanthanide complex |
| url | http://www.sciencedirect.com/science/article/pii/S2211715622002338 |
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