English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/95094
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 13 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Carbon nanofibres coated with Ni decorated MoS2 nanosheets as catalyst for vacuum residue hydroprocessing

Autor Pinilla Ibarz, José Luis; Purón, Holda; Torres Gamarra, Daniel; de Llobet, Saúl; Moliner Álvarez, Rafael; Suelves Laiglesia, Isabel; Millan, Marcos
Palabras clave Carbon nanofibers
MoS2
Vacuum residue
Hydroprocessing
Fecha de publicación 2014
EditorElsevier
Citación Applied Catalysis B: Environmental 148-149: 357- 365 (2014)
ResumenCatalysts based on functionalised carbon nanofibers (FCNF) coated with Ni-decorated MoS2 nanosheets were obtained by direct decomposition of ammonium thiomolybdate and nickel nitrate impregnated on the FCNF under controlled temperature conditions in inert atmosphere. The catalysts were characterised by X-ray diffraction (XRD), N2 adsorption, Raman spectroscopy, temperature programmed reduction of sulfur species (TPR-S), NH3 temperature programmed desorption (NH3-TPD) and transmission electron microscopy (TEM). Decomposition temperature was found to have a paramount importance in the formation of uniform MoS2 slabs, as revealed by the TEM study: at 600°C, non-uniform covering of the carbon nanofiber (CNF) was observed together with the presence of small round-shaped metal particles (ca. 20nm). On the other hand, at 450°C CNF appeared homogeneously covered by amorphous MoS2 slabs decorated with Ni, resulting in higher amount of coordinated unsaturated sites (CUS), as determined by TPR-S. Catalysts were tested in the hydroprocessing of a vacuum residue and the results were compared against a benchmark alumina-supported NiMo catalyst. Higher asphaltene conversions were obtained for the CNF-supported catalysts prepared at 450°C, which overperformed the Al2O3-supported benchmark catalyst. However, the catalytic performance in hydrodesulfurisation and hydrodemetallisation of the CNF-based catalysts was slightly lower than that of the benchmark catalyst. © 2013 Elsevier B.V.
Descripción 9 págs.,7 figures, 3 tables.--Available online 21 November 2013
Versión del editorhttp://dx.doi.org/10.1016/j.apcatb.2013.11.019
URI http://hdl.handle.net/10261/95094
DOI10.1016/j.apcatb.2013.11.019
Identificadoresdoi: 10.1016/j.apcatb.2013.11.019
issn: 0926-3373
Aparece en las colecciones: (ICB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Carbon_ nanofibres_coated_with_Ni.pdf1,08 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.