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- W4378172693 abstract "We employ time-slice and velocity map ion imaging methods to explore the quantum-state resolved dynamics in thermal N2O decomposition on Pd(110). We observe two reaction channels: a thermal channel that is ascribed to N2 products initially trapped at surface defects and a hyperthermal channel involving a direct release of N2 to the gas phase from N2O adsorbed on bridge sites oriented along the [001] azimuth. The hyperthermal N2 is highly rotationally excited up to J = 52 (v″ = 0) with a large average translational energy of 0.62 eV. Between 35 and 79% of the estimated barrier energy (1.5 eV) released upon dissociation of the transition state (TS) is taken up by the desorbed hyperthermal N2. The observed attributes of the hyperthermal channel are interpreted by post-transition-state classical trajectories on a density functional theory-based high-dimensional potential energy surface. The energy disposal pattern is rationalized by the sudden vector projection model, which attributes to unique features of the TS. Applying detailed balance, we predict that in the reverse Eley-Rideal reaction, both N2 translational and rotational excitation promote N2O formation." @default.
- W4378172693 created "2023-05-26" @default.
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- W4378172693 date "2023-05-24" @default.
- W4378172693 modified "2023-09-26" @default.
- W4378172693 title "Highly Rotationally Excited N<sub>2</sub> Reveals Transition-State Character in the Thermal Decomposition of N<sub>2</sub>O on Pd(110)" @default.
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- W4378172693 doi "https://doi.org/10.1021/jacs.3c01127" @default.
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