{"title":"新癸酸与1-(2-Neononylamidoethyl)-2- neononyl -2-咪唑啉混合溶剂协同萃取铒(III","authors":"S. Bondareva, Y. Murinov","doi":"10.1080/07366299.2023.2187700","DOIUrl":null,"url":null,"abstract":"ABSTRACT The solvent extraction of erbium(III), representing heavy lanthanides, from nitrate solutions has been studied using a novel mixture of neodecanoic acid (HA) with 1-(2-neononylamidoethyl)-2-neononyl-2-imidazoline (L) in toluene with 15 % (v/v) of n-decanol. The synergistic extraction of erbium(III) has been found in the equilibrium pH range from 6.0 to 6.5. The effects of the equilibration time, the temperature, the nature of diluent, the aqueous phase acidity, and variation of one extractant at a fixed concentration of the other extractant have been investigated. The temperature had no effect on the extraction process in the range of 0–45°C. FT-IR spectra of the mixed extractant before and after extraction of erbium were examined, and the loading capacity of the mixed extractant for Er(III) was determined. The experimental data indicated that the erbium ion is not directly coordinated by L, and the nitrate ions are not involved in the extraction of erbium(III). In the equilibrium pH range between 5.0 and 6.0, the extracted species were determined to be [Er(OH)A2·L] by the slope analysis method. The increase in the pH leads to the dominance of [Er(OH)2A·L] as the main extracted species. The extraction mechanism is discussed. The Nd/Pr, Y/Pr, Dy/Y, Ho/Y, and Er/Y separation factors were calculated, and the possibility of the separation of the Er–Y pair was demonstrated.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"317 - 335"},"PeriodicalIF":1.8000,"publicationDate":"2023-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic Solvent Extraction of Erbium(III) using a Mixture of Neodecanoic Acid with 1-(2-Neononylamidoethyl)-2-Neononyl-2-Imidazoline\",\"authors\":\"S. Bondareva, Y. Murinov\",\"doi\":\"10.1080/07366299.2023.2187700\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT The solvent extraction of erbium(III), representing heavy lanthanides, from nitrate solutions has been studied using a novel mixture of neodecanoic acid (HA) with 1-(2-neononylamidoethyl)-2-neononyl-2-imidazoline (L) in toluene with 15 % (v/v) of n-decanol. The synergistic extraction of erbium(III) has been found in the equilibrium pH range from 6.0 to 6.5. The effects of the equilibration time, the temperature, the nature of diluent, the aqueous phase acidity, and variation of one extractant at a fixed concentration of the other extractant have been investigated. The temperature had no effect on the extraction process in the range of 0–45°C. FT-IR spectra of the mixed extractant before and after extraction of erbium were examined, and the loading capacity of the mixed extractant for Er(III) was determined. The experimental data indicated that the erbium ion is not directly coordinated by L, and the nitrate ions are not involved in the extraction of erbium(III). In the equilibrium pH range between 5.0 and 6.0, the extracted species were determined to be [Er(OH)A2·L] by the slope analysis method. The increase in the pH leads to the dominance of [Er(OH)2A·L] as the main extracted species. The extraction mechanism is discussed. The Nd/Pr, Y/Pr, Dy/Y, Ho/Y, and Er/Y separation factors were calculated, and the possibility of the separation of the Er–Y pair was demonstrated.\",\"PeriodicalId\":22002,\"journal\":{\"name\":\"Solvent Extraction and Ion Exchange\",\"volume\":\"41 1\",\"pages\":\"317 - 335\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2023-04-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solvent Extraction and Ion Exchange\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1080/07366299.2023.2187700\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solvent Extraction and Ion Exchange","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1080/07366299.2023.2187700","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Synergistic Solvent Extraction of Erbium(III) using a Mixture of Neodecanoic Acid with 1-(2-Neononylamidoethyl)-2-Neononyl-2-Imidazoline
ABSTRACT The solvent extraction of erbium(III), representing heavy lanthanides, from nitrate solutions has been studied using a novel mixture of neodecanoic acid (HA) with 1-(2-neononylamidoethyl)-2-neononyl-2-imidazoline (L) in toluene with 15 % (v/v) of n-decanol. The synergistic extraction of erbium(III) has been found in the equilibrium pH range from 6.0 to 6.5. The effects of the equilibration time, the temperature, the nature of diluent, the aqueous phase acidity, and variation of one extractant at a fixed concentration of the other extractant have been investigated. The temperature had no effect on the extraction process in the range of 0–45°C. FT-IR spectra of the mixed extractant before and after extraction of erbium were examined, and the loading capacity of the mixed extractant for Er(III) was determined. The experimental data indicated that the erbium ion is not directly coordinated by L, and the nitrate ions are not involved in the extraction of erbium(III). In the equilibrium pH range between 5.0 and 6.0, the extracted species were determined to be [Er(OH)A2·L] by the slope analysis method. The increase in the pH leads to the dominance of [Er(OH)2A·L] as the main extracted species. The extraction mechanism is discussed. The Nd/Pr, Y/Pr, Dy/Y, Ho/Y, and Er/Y separation factors were calculated, and the possibility of the separation of the Er–Y pair was demonstrated.
期刊介绍:
Solvent Extraction and Ion Exchange is an international journal that publishes original research papers, reviews, and notes that address all aspects of solvent extraction, ion exchange, and closely related methods involving, for example, liquid membranes, extraction chromatography, supercritical fluids, ionic liquids, microfluidics, and adsorption. We welcome submissions that look at: The underlying principles in solvent extraction and ion exchange; Solvent extraction and ion exchange process development; New materials or reagents, their syntheses and properties; Computational methods of molecular design and simulation; Advances in equipment, fluid dynamics, and engineering; Interfacial phenomena, kinetics, and coalescence; Spectroscopic and diffraction analysis of structure and dynamics; Host-guest chemistry, ion receptors, and molecular recognition.