Structured carbons as supports for hydrogenation hybrid catalysts prepared by the immobilization of a Rh diamine complex

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/53071
Información del item - Informació de l'item - Item information
Title: Structured carbons as supports for hydrogenation hybrid catalysts prepared by the immobilization of a Rh diamine complex
Authors: Gheorghiu, Constanta Cristina | García-Bordejé, Enrique | Job, Nathalie | 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 xerogel | CNF-monolith | Structured supports | Hybrid catalyst | Hydrogenation
Knowledge Area: Química Inorgánica
Issue Date: 1-May-2016
Publisher: Elsevier
Citation: Chemical Engineering Journal. 2016, 291: 47-54. doi:10.1016/j.cej.2016.01.071
Abstract: A CNF-monolith sample (carbon nanofibres grown on a ceramic monolith), and a granular carbon xerogel have been used as supports for hybrid catalysts where the active species is an Rh diamine complex. The advantages of these supports are their open porous structure and their morphology, which make catalyst handling easier and avoid difficult separation processes. The obtained catalysts are noticeably more active than the homogeneous Rh complex and are stable against leaching. At first use, partial reduction of the Rh complex takes place and nanometer-sized Rh particles develop, which increases the catalyst activity. Despite the open porous structure, mass transport limitations are present, especially in the case of the carbon xerogel based catalyst. Differences in internal mass transfer limitations are essentially due to the different diffusional path lengths.
Sponsor: The authors thank the financial support through public projects of reference: MAT2012-32832 (Spanish Ministry of Economy and Competitiveness and FEDER) and PROMETEO/II/2014/010 (Generalitat Valenciana). C.C.G. thanks her FPU scholarship to the Spanish Ministry of Education.
URI: http://hdl.handle.net/10045/53071
ISSN: 1385-8947 (Print) | 1873-3212 (Online)
DOI: 10.1016/j.cej.2016.01.071
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.cej.2016.01.071
Appears in Collections:INV - MCMA - Artículos de Revistas

Files in This Item:
Files in This Item:
File Description SizeFormat 
Thumbnail2016_Gheorghiu_etal_CEJ_final.pdfVersión final (acceso restringido)1,84 MBAdobe PDFOpen    Request a copy
Thumbnail2016_Gheorghiu_etal_CEJ_accepted.pdfAccepted Manuscript (acceso abierto)27,15 MBAdobe PDFOpen Preview


Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.