Artículo
Does shaping catalysts modify active phase sites? A comprehensive in situ FTIR spectroscopic study on the performance of a model Ru/Al2O3 catalyst for the CO methanation
Autor/es | Bobadilla Baladrón, Luis Francisco
Muñoz Murillo, Ara Laguna Espitia, Oscar Hernando Centeno Gallego, Miguel Ángel Odriozola Gordón, José Antonio |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2018 |
Fecha de depósito | 2022-09-29 |
Publicado en |
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Resumen | Routinely, it seems assumed that the catalytic layer coated on monoliths and microchannel reactors preserve the
properties of the initial powder catalyst. However, this assumption should be reasonably demonstrated since ... Routinely, it seems assumed that the catalytic layer coated on monoliths and microchannel reactors preserve the properties of the initial powder catalyst. However, this assumption should be reasonably demonstrated since the set of chemical and physical manipulations involved in the preparation of these catalytic devices hardly does not alter the surface of the starting catalyst powders. This work aims to evaluate the transformations that takes place in a model Ru/Al2O3 catalyst during a typical slurry preparation procedure and their impact on the catalytic performance for the CO methanation reaction and the selective methanation of CO in CO2-rich reformate gases. For this purpose, we have conducted an in situ comprehensive study by means of Fourier Transform Infrared Spectroscopy (FTIR) in which the nature of the species present on the surface of the catalyst during CO hy- drogenation was analyzed. This study reveals that during the preparation of the slurry the starting Ru/Al2O3 catalyst suffers a redispersion of metallic Ru particles and more surface hydroxyls are created by the in- corporation of additional alumina. These modifications have a noticeable influence in the catalytic performance and despite their importance, these aspects have been poorly considered in other studies. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | ENE2015-66975- C3-2-R |
Cita | Bobadilla Baladrón, L.F., Muñoz Murillo, A., Laguna Espitia, O.H., Centeno Gallego, M.Á. y Odriozola Gordon, J.A. (2018). Does shaping catalysts modify active phase sites? A comprehensive in situ FTIR spectroscopic study on the performance of a model Ru/Al2O3 catalyst for the CO methanation. Chemical Engineering Journal, 357, 248-257. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CEJ aceptado 2018.pdf | 1.715Mb | [PDF] | Ver/ | |