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Crystallographic Visualization of a Double Water Molecule Addition on a Pt1-MOF during the Low-temperature Water-Gas Shift Reaction

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Crystallographic Visualization of a Double Water Molecule Addition on a Pt1-MOF during the Low-temperature Water-Gas Shift Reaction

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dc.contributor.author	Bilanin, Cristina
dc.contributor.author	Tiburcio, Estefanía
dc.contributor.author	Ferrando Soria, Jesús
dc.contributor.author	Armentano, Donatella
dc.contributor.author	Leyva-Pérez, Antonio
dc.contributor.author	Pardo Marín, Emilio
dc.date.accessioned	2022-10-21T16:40:29Z
dc.date.available	2022-10-21T16:40:29Z
dc.date.issued	2021
dc.identifier.citation	Bilanin, Cristina Tiburcio, Estefanía Ferrando Soria, Jesús Armentano, Donatella Leyva-Pérez, Antonio Pardo Marín, Emilio 2021 Crystallographic Visualization of a Double Water Molecule Addition on a Pt1-MOF during the Low-temperature Water-Gas Shift Reaction Chemcatchem 13 4 1195 1200
dc.identifier.uri	https://hdl.handle.net/10550/84243
dc.description.abstract	The low-temperature water-gas shift reaction (WGSR, CO+H2O ⇔ H2+CO2) is considered a very promising reaction -candidate for fuel cells- despite an efficient and robust catalyst is still desirable. One of the more prominent catalysts for this reaction is based on single Pt atoms (Pt1) on different supports, which are supposed to manifold the reaction by the accepted mechanism for the general WGSR, i. e. by addition of one H2O molecule to CO, with generation of CO2 and H2. Here we show, experimentally, that not one but two H2O molecules are added to CO on the Pt1 catalyst, as assessed by a combination of reactivity experiments with soluble Pt catalysts, kinetic and spectroscopic measurements, and finally by in-operando single crystal X-ray diffraction on a Pt1-MOF, to visualize the formation of the hemiacetal intermediate on the solid catalytic site. These results confirm our previous DFT predictions and provide a paradigmatic shift in the assumed mechanism of the WGSR, which may open the debate if two H2O molecules are recurrently added during the WGSR, not only for Pt1 catalysts but also for other metal catalysts.
dc.language.iso	eng
dc.relation.ispartof	Chemcatchem, 2021, vol. 13, num. 4, p. 1195-1200
dc.subject	Cristalls
dc.subject	Aigua Química
dc.subject	Catàlisi
dc.title	Crystallographic Visualization of a Double Water Molecule Addition on a Pt1-MOF during the Low-temperature Water-Gas Shift Reaction
dc.type	journal article	es_ES
dc.date.updated	2022-10-21T16:40:29Z
dc.identifier.doi	10.1002/cctc.202001492
dc.identifier.idgrec	142020
dc.rights.accessRights	open access	es_ES