Structured carbons as supports for hydrogenation hybrid catalysts prepared by the immobilization of a Rh diamine complex
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Título: | Structured carbons as supports for hydrogenation hybrid catalysts prepared by the immobilization of a Rh diamine complex |
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Autor/es: | Gheorghiu, Constanta Cristina | García-Bordejé, Enrique | Job, Nathalie | Román-Martínez, M. Carmen |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Carbon xerogel | CNF-monolith | Structured supports | Hybrid catalyst | Hydrogenation |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 1-may-2016 |
Editor: | Elsevier |
Cita bibliográfica: | Chemical Engineering Journal. 2016, 291: 47-54. doi:10.1016/j.cej.2016.01.071 |
Resumen: | 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. |
Patrocinador/es: | 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 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.cej.2016.01.071 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
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![]() | Versión final (acceso restringido) | 1,84 MB | Adobe PDF | Abrir Solicitar una copia |
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