論文

査読有り
2018年3月1日

Ammonia Dehydrogenation on Cobalt Cluster Cations Doped with Niobium

Topics in Catalysis
  • Shinichi Hirabayashi
  • ,
  • Masahiko Ichihashi

61
1-2
開始ページ
35
終了ページ
41
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s11244-017-0861-6
出版者・発行元
Springer US

Reactivity of bimetallic cobalt-niobium cluster cations, ConNbm + (n = 1–4, 6
m = 1–3), toward ammonia was investigated at near thermal energy using a guided ion beam tandem mass spectrometer. The dehydrogenation of NH3 is dominantly observed in the single-collision reactions of all the bimetallic clusters studied here. Most of the clusters containing one niobium atom, ConNb+, exhibit large cross sections for the NH3 dehydrogenation compared to the corresponding single-element clusters, Con+1 + and Nbn+1 +. Density functional theory calculations reveal that both the transition states involved in the first and the second cleavages of N–H bonds of NH3 are significantly stabilized for Co4Nb+, which gives rise to the higher reactivity toward the NH3 dehydrogenation. The multiple-collision reactions of ConNb+ (n = 3, 4, and 6) result in the formation of ConNbN2 +, which can be generated via complete dehydrogenation of two NH3 molecules, in addition to the formation of ConNbNxHx +.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1007/s11244-017-0861-6
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000428065700005&DestApp=WOS_CPL

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