Abstract
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 language | English |
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Pages (from-to) | 1148-1154 |
Number of pages | 7 |
Journal | Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |
Volume | 71 |
Issue number | 704 |
DOIs | |
Publication status | Published - Apr 2005 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanical Engineering