Chemisorption of silicon cluster ions (Sin+, n=10-30) with ethylene (C2H4) by using FT-ICR mass spectrometer

Masamichi Kohno, Shuhei Inoue, Shigeo Maruyama

Research output: Contribution to journalArticlepeer-review


Mass-selected silicon cluster ions were levitated in a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer and monitored during chemisorption reaction with ethylene (C2H4). Through measurements of "time-dependency" of this reaction process, large change of the reactivity depending on the number of absorbed ethylene was observed, in addition to the strong dependency to silicon cluster size. From Si15+ to Si18+ shows a special stability of SixEy+ when x + y = 19, such as Si15E4+. The large decrease in the reactivity of Sin+ was observed due to the contamination of hydrogen atom to Sin+. Rate constants for the adsorption of the first C2H4 molecules on Sin+ were estimated. The reaction kinetics data suggest that structural isomers are present for all clusters except Si14+ in the size range investigated.

Original languageEnglish
Pages (from-to)1148-1154
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number704
Publication statusPublished - Apr 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering


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