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Título: | Supported WOx-based catalysts for methanol dehydration to dimethyl ether |
Autor: | Ladera Gallardo, Rosa M.; Finocchio, Elisabetta; Rojas Muñoz, Sergio CSIC ORCID; Busca, G.; García Fierro, José Luis CSIC ORCID; Ojeda Pineda, Manuel CSIC | Palabras clave: | Dimethyl ether Acidity Methanol Molecular structure Tungsten oxide |
Fecha de publicación: | nov-2013 | Editor: | Elsevier | Citación: | Fuel 113: 1-9 (2013) | Resumen: | TiO2-supported WOx solids with different W loadings (between 0.2 and 9.0 at. W nm−2) were prepared by incipient wetness impregnation of TiO2 with ammonium (para)tungstate aqueous solutions. The prepared materials were characterized in detail by inductively coupled plasma emission spectrometry (ICP-OES), N2 adsorption-desorption isotherms, X-ray diffraction (XRD), temperature-programmed desorption of NH3, X-ray photoelectron and Raman spectroscopy, and infrared spectroscopy using CO and pyridine as probe molecules. We have observed that the molecular structure of WOx species and their acid features are markedly influenced by the W surface density. A relationship between catalytic performance in dimethyl ether formation via methanol dehydration and the acid properties is found. | Versión del editor: | https://doi.org/10.1016/j.fuel.2013.05.083 | URI: | http://hdl.handle.net/10261/182459 | DOI: | 10.1016/j.fuel.2013.05.083 | ISSN: | 0016-2361 | E-ISSN: | 1873-7153 |
Aparece en las colecciones: | (ICP) Artículos |
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