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- W4285491702 abstract "We report a theoretical investigation of the activation and dehydrogenation of CH4 on a (CeO2)10 cluster based on density functional theory calculations combined with the unity bond index-quadratic exponential potential approach. As expected, we identified a physisorption interaction mechanism between the CH4 and (CeO2)10 systems. Along the dehydrogenation, the interaction CHn–(CeO2)10 occurs by chemisorption via the formation of C–O and H–O bonds. Due to adsorption effects, the oxidation state of Ce atoms changes from Ce4+ to Ce3+, which results in the elongation of the Ce–O bonds due to the larger radius of the Ce3+ species, and hence, it affects the formation of the CO and CH3OH species. Our combined approach showed that the first dehydrogenation step involves a transition-state formation induced by the molecular hybridization before the CH3 radical formation. Finally, our results indicate trends for new compound formation, once the energy barrier involved in the first step of dehydrogenation is overcome." @default.
- W4285491702 created "2022-07-15" @default.
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- W4285491702 date "2022-07-15" @default.
- W4285491702 modified "2023-10-15" @default.
- W4285491702 title "Ab Initio Investigation of CH<sub>4</sub> Dehydrogenation on a (CeO<sub>2</sub>)<sub>10</sub> Cluster" @default.
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- W4285491702 doi "https://doi.org/10.1021/acs.jpcc.2c02038" @default.
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