Support effects in a Rh diamine complex heterogenized on carbon materials

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Title: Support effects in a Rh diamine complex heterogenized on carbon materials
Authors: Gheorghiu, Constanta Cristina | Salinas Martínez de Lecea, Concepción | Román-Martínez, M. Carmen
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Carbon xerogels | Hydrogenation | Nanofibers | Rhodium
Knowledge Area: Química Inorgánica
Issue Date: Jun-2013
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Citation: ChemCatChem. 2013, 5(6): 1587-1597. doi:10.1002/cctc.201200598
Abstract: The Rh diamine complex [Rh(COD)NH2(CH2)2NH(CH2)3Si(OCH3)3] BF4 was heterogenized by covalent bonding on two carbon xerogels and on carbon nanofibers, with the objective of preparing hydrogenation hybrid catalysts. Gas adsorption, SEM, TEM, DTP, ICP-OES and XPS were used for characterization. The results indicate that the active molecule is mainly located in supermicropores and produces microporosity blockage. The hybrid catalysts are more active than the homogeneous complex, but the Rh complex is partially reduced upon reaction. This modification is related to the nature of the support, which also shows effects in the stabilization against sintering of the Rh particles formed. The support porosity is a key factor in the selectivity differences between the catalysts.
Sponsor: The authors thank the financial support to MICINN, Project MAT2009-07150, to GVA and FEDER, Project Prometeo 2009/047, and to MEC for the FPU scholarship of C.C.G.
ISSN: 1867-3880 (Print) | 1867-3899 (Online)
DOI: 10.1002/cctc.201200598
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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