English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/162850
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Ionothermal preparation of triclinic SAPO-34 and its catalytic performance in the MTO process

AutorSánchez Sánchez, Manuel ; Romero, Álvaro A.; Pinilla-Herrero, Irene; Sastre, Enrique
Palabras claveTriclinic SAPO-34
V-doped
Ionothermal
Methanol-to-olefins
Selectivity to olefins
Hydrated SAPO-34
Fecha de publicación1-nov-2017
EditorElsevier
CitaciónCatalysis Today 296: 239-246 (2017)
ResumenThis work reports the ionothermal synthesis of SAPO-34 material, which is the per-excellence catalyst in the methanol-to-olefins (MTO) process. The direct addition of Si sources to the aluminophosphate and ionic liquid (1-ethyl-3-methyl imidazolium) mixture gave rise to the undesired AEL-structured materials. Therefore, some other strategies were necessary to apply. In particular, two unexplored strategies have been developed: (i) the addition of further heteroatom ions able to direct CHA materials, V ions being particularly efficient; and (ii) to carry out the synthesis in open systems rather than in autoclaves under autogenous pressure. Interestingly, the combination of both strategies led to V4+-free SAPO-34 samples, so any Brönsted acidity of the samples should be assigned to the incorporated Si atoms. These materials, far from being conventional SAPO-34, have triclinic CHA structure, which provides some structural singularities and have not been tested as catalysts in the MTO reaction yet. Despite their conversion level achieved was lower than that given by conventional SAPO-34, probably because of the scarce optimization of the physicochemical properties of the material, the selectivity towards the different olefins is interestingly different, favoring C4 olefins at the expense of ethylene and propylene.
Versión del editorhttp://dx.doi.org/10.1016/j.cattod.2017.04.065
URIhttp://hdl.handle.net/10261/162850
DOI10.1016/j.cattod.2017.04.065
ISSN0920-5861
Aparece en las colecciones: (ICP) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Sanchez-Sanchez et al_CATTOD_DigitalCSIC.pdf Embargado hasta 1 de noviembre de 2019855,31 kBAdobe PDFVista previa
Visualizar/Abrir     Petición de una copia
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.