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• W4309083014 abstract "The reverse water–gas shift reaction (rWGSR) is highly relevant for CO2 utilization in sustainable fuel and chemical production. Both Au and Cu are interesting for rWGSR catalysis, but it turns out that the reactivities of Au and Cu are very different. In this study, we consider alloys made from Au, Ag, Cu, Pt, and Pd to identify surfaces with reactivities for CO2 dissociation between Cu(111) and Au(111). Additionally, interesting alloy surfaces should have activation energies for CO2 dissociation that are only a little higher than the endothermic reaction energy. We find that certain Cu-based alloys with Ag and Au meet these criteria, whereas alloys containing Pt or Pd do not. The low additional cost in activation energy occurs when the transition-state and final-state configurations are made to look very similar due to the placement of the different metal elements on the surface. Finally, we construct a kinetic model that compares the rate of the rWGSR to the estimated rate of unwanted side reactions (i.e., methane formation or coking) on Ag–Cu alloy surfaces with varying compositions and random placement of the Ag and Cu atoms. The thermodynamics favor methane formation over rWGSR, but the model suggests that Ag–Cu alloy surfaces are highly selective for the rWGSR." @default.
• W4309083014 created "2022-11-21" @default.
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• W4309083014 date "2022-11-15" @default.
• W4309083014 modified "2023-09-27" @default.
• W4309083014 title "Bridging the Catalyst Reactivity Gap between Au and Cu for the Reverse Water–Gas Shift Reaction" @default.
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• W4309083014 doi "https://doi.org/10.1021/acs.jpcc.2c06504" @default.
• W4309083014 hasPublicationYear "2022" @default.
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