科技报告详细信息
Ab Initio Studies of Coke Formation on Ni Catalysts During Methane Reforming
Sholl, David S.
Carnegie-Mellon University
关键词: Chemical Reactions;    Oxidation;    Reduction;    01 Coal, Lignite, And Peat;    Functionals;   
DOI  :  10.2172/882882
RP-ID  :  none
RP-ID  :  FG26-02NT41538
RP-ID  :  882882
美国|英语
来源: UNT Digital Library
PDF
【 摘 要 】

The atomic-scale processes that control the formation of carbon deposits on Ni catalysts in reforming applications are poorly understood. Ab initio Density Functional Theory calculations have been used to examine several key elementary steps in the complex network of chemical reactions that precedes carbon formation on practical catalysts. Attention has been focused on the disproportionation of CO. A comparative study of this reaction on flat and stepped crystal planes of Ni has provided the first direct evidence that surface carbon formation is driven by elementary reactions occurring at defect sites on Ni catalysts. The adsorption and diffusion of atomic H on several flat and stepped Ni surfaces has also been characterized experimentally.

【 预 览 】
附件列表
Files Size Format View
882882.pdf 109KB PDF download
  文献评价指标  
  下载次数:3次 浏览次数:24次