Single-Atom Pd Catalyst on a CeO2 (111) Surface for Methane Oxidation: Activation Barriers and Reaction Pathways
Shalini Tomar,
Bhagirath Singh Bhadoria,
Hojin Jeong
et al.
Abstract:Employing density functional theory, we delved into the comprehensive pathways for methane oxidation on the Pd single atom supported with CeO 2 (111) encompassing sequential methane dehydrogenation, O 2 dissociation, and oxidation processes. The introduction of a Pd atom into CeO 2 (111) led to a reduction in the barrier for CH 4 dissociation to 0.50 eV. The methane dehydrogenation proceeded through a series of reactions: CH 4 → CH 3 → CH 2 → CH → C, with all dehydrogenation steps being exothermic except the C… Show more
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