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dc.contributor.authorBlasco, Javieres_ES
dc.contributor.authorCuartero, Veraes_ES
dc.contributor.authorSubías, G.es_ES
dc.contributor.authorJiménez, M. Victoriaes_ES
dc.contributor.authorPérez-Torrente, Jesús J.es_ES
dc.contributor.authorOro, Luis A.es_ES
dc.contributor.authorBlanco, Matíases_ES
dc.contributor.authorÁlvarez Rodríguez, Patriciaes_ES
dc.contributor.authorBlanco Rodríguez, Claraes_ES
dc.contributor.authorMenéndez López, Rosa Maríaes_ES
dc.identifier.citationJournal of Physics - Conference Series 712(1): 012052 (2016)es_ES
dc.descriptionTrabajo presentado como póster a la 16th International Conference on X-ray Absorption Fine Structure (XAFS16), celebrada en Karlsruhe (Germany) del 23 al 28 de agosto de 2015.-
dc.description.abstractHybrid catalysts based on Iridium N-heterocyclic carbenes anchored to carbon nanotubes (CNT) have been studied by XAFS spectroscopy. Oxidation of CNT yields a large amount of functional groups, mainly hydroxyl groups at the walls and carboxylic groups at the tips, defects and edges. Different kinds of esterification reactions were performed to functionalize oxidized CNT with imidazolium salts. Then, the resulting products were reacted with an Ir organometallic compound to form hybrid catalysts efficient in hydrogen transfer processes. XANES spectroscopy agree with the presence of Ir(I) in these catalysts and the EXAFS spectra detected differences in the local structure of Ir atoms between the initial Ir organometallic compound and the Ir complexes anchored to the CNT. Our results confirm that the halide atom, present in the Ir precursor, was replaced by oxygen from -OH groups at the CNT wall in the first coordination shell of Ir. The lability of this group accounts for the good recyclability and the good efficiency shown by these hybrid catalysts.es_ES
dc.description.sponsorshipAuthors acknowledge the financial support from Mineco/FEDER CTQ2010-15221, MAT2012-38213-C02-01, and DGA E07 and E69 projects. M. Blanco thanks MECD for his FPU grant (AP2010-0025).es_ES
dc.publisherInstitute of Physics (Great Britain)es_ES
dc.relation.isversionofPublisher's versiones_ES
dc.titleLocal structure of Iridium organometallic catalysts covalently bonded to carbon nanotubeses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderDiputación General de Aragón-
dc.contributor.funderEuropean Commission-
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (España)-
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