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Artículo

Insights on the combustion mechanism of ethanol and n-hexane in honeycomb monolithic type catalysts: Influence of the amount and nature of Mn-Cu mixed oxide

Morales, Maria RoxanaIcon ; Yeste, M. Pilar; Vidal, Hilario; Gatica, José M.; Cadus, Luis EduardoIcon
Fecha de publicación: 11/2017
Editorial: Elsevier
Revista: Fuel
ISSN: 0016-2361
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

Mn-Cu mixed oxides were deposited by ultrasonic impregnation on ceramic honeycomb monoliths. Its catalytic performance was evaluated in the combustion of ethanol and n-hexane, VOC molecules of different chemical nature. The catalysts were characterized by N2 physisorption, SEM-EDS, XRD, X-ray fluorescence, XPS, TPR, TPD-O2 and OSC measurements. It was observed that the catalyst with the lowest content of Mn-Cu phase was the most active in the combustion of ethanol. This was attributed to the higher content of Mn4+ and the increase of lattice oxygen mobility, which would favor a Mars-van Krevelen type mechanism. The catalyst with a medium content of Mn-Cu, proved to be the most active in the combustion of n-hexane. This was associated with a high content of oxygen vacancies and easy availability of oxygen adsorbed on the surface, promoting the combustion of n-hexane, possibly through a Rideal-Eley type mechanism. The catalyst with the highest content of the Mn-Cu phase showed low activity in combustion of ethanol and n-hexane, which was attributed to a higher crystallinity of the Mn-Cu phases generated.
Palabras clave: Cordierite , Ethanol , Manganese-Copper Mixed Oxide , N-Hexane , Voc Oxidation
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/64450
URL: http://linkinghub.elsevier.com/retrieve/pii/S0016236117309316
DOI: https://dx.doi.org/10.1016/j.fuel.2017.07.069
Colecciones
Articulos(INTEQUI)
Articulos de INST. DE INVEST. EN TECNOLOGIA QUIMICA
Citación
Morales, Maria Roxana; Yeste, M. Pilar; Vidal, Hilario; Gatica, José M.; Cadus, Luis Eduardo; Insights on the combustion mechanism of ethanol and n-hexane in honeycomb monolithic type catalysts: Influence of the amount and nature of Mn-Cu mixed oxide; Elsevier; Fuel; 208; 11-2017; 637-646
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