000127874 001__ 127874 000127874 005__ 20231127095528.0 000127874 0247_ $$2doi$$a10.1016/j.carbon.2014.11.016 000127874 0248_ $$2sideral$$a94136 000127874 037__ $$aART-2015-94136 000127874 041__ $$aeng 000127874 100__ $$aBlanco,M. 000127874 245__ $$aGraphene-NHC-iridium hybrid catalysts built through -OH covalent linkage Dedicated to the lasting Memory of Prof. Dr. María Pilar García for her valuable talent as human, teacher and chemist 000127874 260__ $$c2015 000127874 5060_ $$aAccess copy available to the general public$$fUnrestricted 000127874 5203_ $$aGraphene oxide (GO) and thermally reduced graphene oxide (TRGO) were covalently modified with imidazolium salts through their hydroxyl surface groups. The selective reaction of the -OH groups with p-nitrophenylchloroformate produced labile intermediate organic carbonate functions which were used for the covalent anchoring of a hydroxy-functionalized imidazolium salt. Nanohybrid materials containing iridium N-heterocyclic carbene (NHC)-type organometallic complexes were prepared by causing the imidazolium-functionalized materials to react with Ir(µ-OMe)(cod)]2. The iridium content of the graphene-based hybrid catalysts, as determined by XPS and ICP-MS was the order of ~5 and 10 wt.%, for the TRGO and GO-based materials, respectively. The graphene-supported iridium hybrid materials were active in the heterogeneous hydrogen-transfer reduction of cyclohexanone to cyclohexanol with 2-propanol/KOH as the hydrogen source. The thermally reduced graphene-NHC-iridium hybrid catalyst showed the best catalytic performance with an initial TOF of 11.500 h-1, slightly better than the related acetoxy-functionalized NHC iridium homogeneous catalyst. A good catalyst recyclability and stability were achieved. 000127874 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CSD2009-00050$$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2013-42532-P 000127874 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000127874 590__ $$a6.198$$b2015 000127874 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b27 / 270 = 0.1$$c2015$$dQ1$$eT1 000127874 591__ $$aCHEMISTRY, PHYSICAL$$b24 / 144 = 0.167$$c2015$$dQ1$$eT1 000127874 592__ $$a1.988$$b2015 000127874 593__ $$aChemistry (miscellaneous)$$c2015$$dQ1 000127874 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000127874 700__ $$aÁlvarez,P. 000127874 700__ $$0(orcid)0000-0002-8648-2586$$aBlanco,C. 000127874 700__ $$0(orcid)0000-0002-0545-9107$$aJiménez,M. V.$$uUniversidad de Zaragoza 000127874 700__ $$aFernández-Tornos,J. 000127874 700__ $$0(orcid)0000-0002-3327-0918$$aPérez-Torrente,J. J.$$uUniversidad de Zaragoza 000127874 700__ $$0(orcid)0000-0001-7154-7239$$aOro,L. A.$$uUniversidad de Zaragoza 000127874 700__ $$aMenéndez,R. 000127874 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica 000127874 773__ $$g83 (2015), 21-31$$pCarbon$$tCarbon$$x0008-6223 000127874 8564_ $$s1506663$$uhttps://zaguan.unizar.es/record/127874/files/texto_completo.pdf$$yPostprint 000127874 8564_ $$s752562$$uhttps://zaguan.unizar.es/record/127874/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000127874 909CO $$ooai:zaguan.unizar.es:127874$$particulos$$pdriver 000127874 951__ $$a2023-11-27-09:46:08 000127874 980__ $$aARTICLE