Ir supported over carbon materials for the selective hydrogenation of chloronitrobenzenes
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Título: | Ir supported over carbon materials for the selective hydrogenation of chloronitrobenzenes |
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Autor/es: | Dongil, Ana Belén | Rivera-Cárcamo, Camila | Pastor Pérez, Laura | Sepúlveda-Escribano, Antonio | Reyes, Patricio |
Grupo/s de investigación o GITE: | Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Iridium | Graphitic character | Nitrobenzene hydrogenation |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 1-jul-2015 |
Editor: | Elsevier |
Cita bibliográfica: | Catalysis Today. 2015, 249: 72-78. doi:10.1016/j.cattod.2014.10.034 |
Resumen: | In the present work we have studied the effect of carbon supports with different graphitic character (carbon nanotubes, mesoporous graphite and activated carbon) on the catalytic performance of iridium nanoparticles on the liquid phase chemoselective hydrogenation of para-chloronitrobenzene at room temperature. The effect of the oxygen groups was also evaluated by oxidizing a portion of the carbon nanotubes. The Raman and XRD spectra showed that the mesoporous graphite displayed the strongest graphitic character. The characterization of the catalysts by HR-TEM, XPS and TPR-H2, showed that the catalysts had similar particle size and that the catalysts prepared over the previously oxidized support, Ir/CNTox, was not fully reduced. The activity and selectivity achieved with the catalyst Ir/CNT was the best among the samples and the presence of irdium oxide on Ir/CNTox diminished the yield to p-chloroaniline, being the worse catalyst. The reactivity of different isomers was also studied over Ir/CNT and it followed the order m > o > p. |
Patrocinador/es: | Authors thank to CONICYT (Chile, FONDECYT 3130483) and Generalitar Valenciana (Spain, PROMETEOII/2014/004–FEDER) for financial support. |
URI: | http://hdl.handle.net/10045/57828 |
ISSN: | 0920-5861 (Print) | 1873-4308 (Online) |
DOI: | 10.1016/j.cattod.2014.10.034 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2014 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.cattod.2014.10.034 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2015_Dongil_etal_CatTod_final.pdf | Versión final (acceso restringido) | 1,29 MB | Adobe PDF | Abrir Solicitar una copia |
2015_Dongil_etal_CatTod_preprint.pdf | Preprint (acceso abierto) | 1,23 MB | Adobe PDF | Abrir Vista previa |
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