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Fe-MOF Materials as Precursors for the Catalytic Dehydrogenation of Isobutane.

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Fe-MOF Materials as Precursors for the Catalytic Dehydrogenation of Isobutane.

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dc.contributor.author	Rodriguez Gomez, Alberto
dc.contributor.author	Ould-Chikh, Samy
dc.contributor.author	Castells-Gil, Javier
dc.contributor.author	Aguilar Tapia, Antonio
dc.contributor.author	Bordet, Pierre
dc.contributor.author	Alrushaid, Mogbel A.
dc.contributor.author	Martí Gastaldo, Carlos
dc.contributor.author	Gascon, Jorge
dc.date.accessioned	2023-05-30T10:58:07Z
dc.date.available	2023-05-30T10:58:07Z
dc.date.issued	2022
dc.identifier.citation	Rodriguez Gomez, Alberto Ould-Chikh, Samy Castells-Gil, Javier Aguilar Tapia, Antonio Bordet, Pierre Alrushaid, Mogbel A. Martí Gastaldo, Carlos Gascon, Jorge 2022 Fe-MOF Materials as Precursors for the Catalytic Dehydrogenation of Isobutane. Acs Catalysis 12 7 3832 3844
dc.identifier.uri	https://hdl.handle.net/10550/87118
dc.description.abstract	We investigate the use of a series of iron-based metal-organic frameworks as precursors for the manufacturing of isobutane dehydrogenation catalysts. Both the as-prepared and spent catalysts were characterized by PXRD, XPS, PDF, ICP-OES, and CHNS+O to determine the physicochemical properties of the materials and the active phases responsible for the catalytic activity. In contrast to the previous literature, our results indicate that (i) the formation of metallic Fe under reaction conditions results in secondary cracking and coke formation; (ii) the formation of iron carbide only contributes to coke formation; and (iii) the stabilization of the Fe2+ species is paramount to achieve stable and selective catalysts. In this sense, promotion with potassium and incorporation of titanium improve the catalytic performance. While potassium is well known to improve the selectivity in iron-catalyzed dehydrogenation reactions, the unprecedented effect of titanium in the stabilization of a nanometric titanomaghemite phase, even under reductive reaction conditions, results in a moderately active and highly selective catalyst for several hours on stream with a remarkable resistance to coke formation.
dc.relation.ispartof	Acs Catalysis, 2022, vol. 12, num. 7, p. 3832-3844
dc.subject	Química
dc.title	Fe-MOF Materials as Precursors for the Catalytic Dehydrogenation of Isobutane.
dc.type	journal article
dc.date.updated	2023-05-30T10:58:07Z
dc.identifier.doi	10.1021/acscatal.1c05303
dc.identifier.idgrec	159225
dc.rights.accessRights	open access