Insight into the immobilization of ionic liquids on porous carbons
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Título: | Insight into the immobilization of ionic liquids on porous carbons |
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Autor/es: | Rufete Beneite, Mónica | Román-Martínez, M. Carmen | Linares-Solano, Angel |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Immobilization | Ionic liquids | Porous carbons |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | oct-2014 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2014, 77: 947-957. doi:10.1016/j.carbon.2014.06.009 |
Resumen: | Very different carbon materials have been used as support in the preparation of supported ionic liquid phase samples (SILP). Some of them have been oxidized, either strongly (with ammonium persulfate solution) or weakly (with air at 300 °C, 2 h). The purpose is to establish which properties of the supports (e.g., porosity -volume and type-, surface area, oxygen surface chemistry and morphology) determine the IL adsorption capacity and the stability (immobilization) of the supported IL phase. The ionic liquid used in this work is 1-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF6]). For each support, samples with different amounts of ionic liquid have been prepared. The maximum IL that can be loaded depends mainly on the total pore volume of the supports. For comparable pore volumes, the porosity type and the oxygen surface content have no influence on the IL loading. The supported IL fills most of the pores, leaving some blocked porosity. The stability of the supported IL phase (especially important for its subsequent use in catalysis) has been tested in water under general hydrogenation conditions (60 °C and 10 bar H2). In general, leaching is low but it increases with the amount of IL loaded and with the oxidation treatments of the supports. |
Patrocinador/es: | The authors thank the Spanish government for the project MAT2012-32832. M.R.B thanks the FPI scholarship grant associated to project MAT2009-07150. |
URI: | http://hdl.handle.net/10045/44746 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2014.06.009 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2014 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.carbon.2014.06.009 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2014_Rufete_etal_Carbon_final.pdf | Versión final (acceso restringido) | 1,08 MB | Adobe PDF | Abrir Solicitar una copia |
2014_Rufete_etal_Carbon_Accepted.pdf | Accepted Manuscript (acceso abierto) | 522,79 kB | Adobe PDF | Abrir Vista previa |
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