論文

査読有り
2015年8月

Thermal Desorption and Reaction of NO Adsorbed on Rhodium Cluster Ions Studied by Thermal Desorption Spectroscopy

JOURNAL OF PHYSICAL CHEMISTRY A
  • Yuki Tawaraya
  • ,
  • Satoshi Kudoh
  • ,
  • Ken Miyajima
  • ,
  • Fumitaka Mafune

119
31
開始ページ
8461
終了ページ
8468
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.jpca.5b04224
出版者・発行元
AMER CHEMICAL SOC

Cationic rhodium clusters, Rh-n(+) (n = 4-8), were prepared in the gas phase by the laser ablation of a Rh rod. The Rh-n(+) clusters were introduced into a reaction gas cell filled with nitric oxide (NO) diluted with He, where they were subjected to collisions with NO and He in a thermal equilibrium at 300 K. The NO molecules were found to adsorb sequentially on the Rh-n(+) clusters forming Rh-n(+)(NO)(m). To examine the adsorption form and the reaction of NO, we heated Rh-n(+)(NO)(m) in an extension tube located after the reaction gas cell and the thermal response of the clusters, desorption of the fragments, was recorded as a function of temperature (300-1000 K). The desorption of NO molecules was predominantly observed below 500 K, giving either Rh-n(+)(NO)(n+1) or Rh-n(+)(NO)(n+2), which indicates that there were NO molecules loosely adsorbed on the Rh-n(+) clusters. Further desorption was found to proceed at higher temperatures (500-1000 K), whereby NO was released from the smaller clusters, Rh-n(+) (n <= 5). In contrast, for the larger clusters (n >= 6), N-2 release was clearly observed at high temperatures (>800 K). Thus, the reduction of NO occurred for larger clusters at higher temperatures.

Web of Science ® 被引用回数 : 17

リンク情報
DOI
https://doi.org/10.1021/acs.jpca.5b04224
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000359331800004&DestApp=WOS_CPL