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Communication: Enhanced dissociative chemisorption of CO2 via vibrational excitation

机译:交流:通过振动激发增强CO2的解离化学吸附

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摘要

A fully coupled global nine-dimensional potential energy surface for the dissociative chemisorption of CO2 on Ni(100) is constructed from similar to 18 000 density functional points. It reveals a complex reaction pathway dominated by two near iso-energetic transition states. The dissociation probabilities obtained by quasi-classical trajectories on the potential energy surface reproduced experimental trends, and indicate that vibrational excitations of CO2 significantly promote the dissociation. Using the sudden vector projection model, the behavior of the reactivity is rationalized by couplings with the reaction coordinate at each transition state. These results offer plausible rationalization for the observed enhancement of CO2 dissociation in non-thermal plasmas by metal surfaces. (C) 2016 AIP Publishing LLC.
机译:一个完全耦合的全局九维势能表面用于Ni(100)上CO2的解离化学吸附,是从类似于18 000个密度功能点构造的。它揭示了一个复杂的反应途径,该途径以两个等能量跃迁状态为主。由准经典轨迹在势能面上获得的解离概率再现了实验趋势,并表明CO2的振动激发显着促进了解离。使用突然矢量投影模型,通过在每个过渡状态下与反应坐标耦合来使反应性行为合理化。这些结果为金属表面在非热等离子体中观察到的CO2离解的增强提供了合理的理由。 (C)2016 AIP出版有限责任公司。

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