CO oxidation on Pt(111): An ab initio density functional theory study

CO oxidation on Pt(111): An ab initio density functional theory study
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DOI:
10.1103/physrevlett.80.3650
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发表时间:
1998-04-20
影响因子:
8.6
通讯作者:
Hutter, J
Hutter, J
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Alavi, A;Hu, PJ;Hutter, J

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采用从头算密度泛函理论研究了 Pt(111) 上的 CO 氧化。确定了反应的低能途径和过渡态。关键事件是在化学吸附的 CO2 分子形成之前 O-金属键的断裂。该路径可以根据 O 和 C 原子与下表面键合的竞争来合理化,并且主要的能量势垒是 O-金属键的强度。
CO oxidation on Pt(111) is studied with ab initio density functional theory. The low energy pathway and transition state for the reaction are identified. The key event is the breaking of an O-metal bond prior to the formation of a chemisorbed CO2 molecule. The pathway can be rationalized in terms of competition of the O and C atoms for bonding with the underlying surface, and the predominant energetic barrier is the strength of the O-metal bond.