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在Rh(111)面上NO+CO反应机理的密度泛函理论研究

田凯1,2, 涂学炎1, 戴树珊1   

  1. 1. 云南大学化学科学与工程学院, 昆明 650091; 2. 云南民族大学化学与生物技术学院, 昆明 650031
  • 收稿日期:2008-09-28 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10
  • 通讯作者: 涂学炎

Density Functional Theory Study of NO+CO Reaction Mechanism on the Rh(111) Surface

TIAN Kai1,2, TU Xue-Yan1*, DAI Shu-Shan1   

  1. 1. School of Chemical Science and Technology, Yunnan University, Kunming 650091, China;2. School of Chemistry and Biotechnology, Yunnan Nationalities University, Kunming 650031, China
  • Received:2008-09-28 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
  • Contact: TU Xue-Yan

摘要: 应用基于密度泛函理论赝势平面波方法的CASTEP程序, 对Rh(111)上的NO+CO反应机理进行研究. 对于反应中的各个关键步骤: NO离解、CO2生成、通过N2O离解生成N2以及通过N+N反应生成N2都进行了详细讨论, 计算得到各反应步骤的过渡态以及活化能, 从而确立了各步骤的反应路径.

关键词: 密度泛函理论, NO+CO反应, Rh(111) 表面, 表面反应机理, 过渡态

Abstract: The NO+CO reaction mechanism on the Rh(111) surface were studied by the plane-wave density functional theory(DFT) with CASTEP program. The main elementary steps are taken into account, namely: NO dissociation,CO2 and N2 production, through the formation of the N2O intermediary species, and the classical N+N recombination.The transition states were confirmed for the main elementary steps by successful transition state search, and the activation energy were calculated, respectively.

Key words: Density functional theory, NO+CO reaction, Rh(111) surface, Surface reaction mechanism, Transition state

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