Physicochemical properties of novel cholinium ionic liquids for the recovery of silver from nitrate media
| Autor: | Mario Avila-Rodriguez, Laurent Gaillon, Rafael M. Rios-Vera, Alexandre Chagnes, Cécile Rizzi, Juliette Sirieix-Plénet, Gérard Cote |
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| Přispěvatelé: | Universidad de Guanajato, Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC), PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX (PHENIX), Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Aqueous solution
Standard molar entropy General Chemical Engineering Inorganic chemistry 02 engineering and technology General Chemistry Activation energy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Molar volume chemistry Nitric acid Ionic liquid Physical chemistry [CHIM]Chemical Sciences 0210 nano-technology Imide Selectivity ComputingMilieux_MISCELLANEOUS |
| Zdroj: | RSC Advances RSC Advances, Royal Society of Chemistry, 2015, 5 (95), pp.78268-78277. ⟨10.1039/c5ra14101j⟩ RSC Advances, 2015, 5 (95), pp.78268-78277. ⟨10.1039/c5ra14101j⟩ |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c5ra14101j⟩ |
| Popis: | Cholinium based ionic liquids (IL), i.e. N-(2-hydroxyethyl)-N,N-dimethyl-N-octylammonium bis(trifluoromethanesulfonyl)imide ([C8linChol]+[NTf2]−) and N-(2-hydroxyethyl)-N-(2-ethylhexyl)-N,N-dimethylammonium bis(trifluoromethanesulfonyl)imide ([C8ramChol]+[NTf2]−) were synthesized and characterized by 1H NMR, 13C NMR, ATR-FTIR and ESI-MS. Activation energy of the viscous flow, molar volume, molar entropy, lattice potential energy and isobaric expansion coefficients were deduced from density and viscosity measurements. These calculations led to the conclusion that neat [C8ramChol]+[NTf2]− exhibits a slightly more compact ion arrangement than [C8linChol]+[NTf2]−. After characterizing physicochemical properties of these two neat ILs, extractive properties of [C8linChol]+[NTf2]− and [C8ramChol]+[NTf2]− saturated with water were also evaluated for silver recovery from aqueous nitrate solutions. Investigation of Ag(I) extraction as a function of pH showed a maximum of extraction efficiency at pH 5 (98.6%) for [C8linChol]+[NTf2]− and good extraction selectivity of Ag(I) and Cu(II) towards Fe(III). High stripping efficiency was achieved by using 0.44 mol L−1 nitric acid. |
| Databáze: | OpenAIRE |
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