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

Masamichi Kohno; Shuhei Inoue; Shigeo Maruyama

doi:10.1299/kikaib.71.1148

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

Masamichi Kohno, Shuhei Inoue, Shigeo Maruyama

Research output: Contribution to journal › Article › peer-review

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 Si_xE_y⁺ when x + y = 19, such as Si₁₅E₄⁺. The large decrease in the reactivity of Si_n⁺ was observed due to the contamination of hydrogen atom to Si_n⁺. Rate constants for the adsorption of the first C₂H₄ molecules on Si_n⁺ 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
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	https://doi.org/10.1299/kikaib.71.1148
Publication status	Published - Apr 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering

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Chemisorption of silicon cluster ions (Si_n⁺, n=10-30) with ethylene (C₂H₄) by using FT-ICR mass spectrometer. / Kohno, Masamichi; Inoue, Shuhei; Maruyama, Shigeo.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 71, No. 704, 04.2005, p. 1148-1154.

Research output: Contribution to journal › Article › peer-review

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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.",

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