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Silica materials doped with bifunctional ionic liquid extractant for yttrium extraction / Yinghui Liu in Industrial & engineering chemistry research, Vol. 48 N° 15 (Août 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7308–7313 Titre : Silica materials doped with bifunctional ionic liquid extractant for yttrium extraction Type de document : texte imprimé Auteurs : Yinghui Liu, Auteur ; Lili Zhu, Auteur ; Xiaoqi Sun, Auteur Année de publication : 2009 Article en page(s) : pp. 7308–7313 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Silica-based  organic-inorganic  hybrid  materials  Binary  mixture  Ionic  liquids Résumé : Two new silica-based organic−inorganic hybrid materials (B104SGs and O104SGs) doped with a binary mixture of imidazolium and phosphonium ionic liquids have been synthesized and used as sorbents in batch system for rare earths (RE) separation. Imidazolium ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate (C4mim+PF6−) or 1-octyl-3-methylimidazolium hexafluorophosphate (C8mim+PF6−) acted as porogens to prepare porous materials and additives to stabilize extractant within silica gel. Trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104), a low-molecular-mass organic gelator, can encourage the formation of porous silica materials and increase the rate of aggregation. Cyphos IL 104 not only acted as an excellent template for the preparation of silica sorbents but also as a bifunctional ionic liquid extractant (bif-ILE) for RE(III) extraction. By the electrostatic attraction between the SiO- groups and phosphonium cations along the surfaces of the silica gel, stable silica sorbents with high extractant content were formed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900468c [article] Silica materials doped with bifunctional ionic liquid extractant for yttrium extraction [texte imprimé] / Yinghui Liu, Auteur ; Lili Zhu, Auteur ; Xiaoqi Sun, Auteur . - 2009 . - pp. 7308–7313. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7308–7313 Mots-clés : Silica-based  organic-inorganic  hybrid  materials  Binary  mixture  Ionic  liquids Résumé : Two new silica-based organic−inorganic hybrid materials (B104SGs and O104SGs) doped with a binary mixture of imidazolium and phosphonium ionic liquids have been synthesized and used as sorbents in batch system for rare earths (RE) separation. Imidazolium ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate (C4mim+PF6−) or 1-octyl-3-methylimidazolium hexafluorophosphate (C8mim+PF6−) acted as porogens to prepare porous materials and additives to stabilize extractant within silica gel. Trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104), a low-molecular-mass organic gelator, can encourage the formation of porous silica materials and increase the rate of aggregation. Cyphos IL 104 not only acted as an excellent template for the preparation of silica sorbents but also as a bifunctional ionic liquid extractant (bif-ILE) for RE(III) extraction. By the electrostatic attraction between the SiO- groups and phosphonium cations along the surfaces of the silica gel, stable silica sorbents with high extractant content were formed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900468c