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RESEARCH PRODUCT
Confined Pt-1(1+) Water Clusters in a MOF Catalyze the Low-Temperature Water-Gas Shift Reaction with both CO2 Oxygen Atoms Coming from Water
Mercedes BoronatChristian W. LopesEmilio PardoJosé J. CalvinoAntonio Leyva-pérezJuan C. Hernández-garridoMiguel López-haroDonatella ArmentanoMiguel ÁNgel Rivero-crespoJesús Ferrando-soriaMarta MonEnrique V. Ramos-fernandezAvelino Cormasubject
PhysicsWater–gas shift reactionQuímica Inorgánicabiology010405 organic chemistryWater-gas shift reactionSingle atom catalystGeneral MedicineGeneral ChemistryMetal-organic frameworks010402 general chemistrybiology.organism_classification01 natural sciencesCatalysisWater-gas shift reactionSingle-atom catalyst0104 chemical sciencesOxygen atomWater clustersPhysical chemistryValenciaMetal-organic frameworks (MOFs)Platinumdescription
[EN] The synthesis and reactivity of single metal atoms in a low-valence state bound to just water, rather than to organic ligands or surfaces, is a major experimental challenge. Herein, we show a gram-scale wet synthesis of Pt-1(1+) stabilized in a confined space by a crystallographically well-defined first water sphere, and with a second coordination sphere linked to a metal-organic framework (MOF) through electrostatic and H-bonding interactions. The role of the water cluster is not only isolating and stabilizing the Pt atoms, but also regulating the charge of the metal and the adsorption of reactants. This is shown for the low-temperature water-gas shift reaction (WGSR: CO + H2O CO2 + H-2), where both metal coordinated and H-bonded water molecules trigger a double water attack mechanism to CO and give CO2 with both oxygen atoms coming from water. The stabilized Pt1+ single sites allow performing the WGSR at temperatures as low as 50 degrees C.
year | journal | country | edition | language |
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2018-11-27 |