Ethylene Chemisorption on Levitated Silicon Cluster Ions: Evidence for Annealing

Abstract

Mass-selected silicon clusters were levitated in a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR), and monitored during chemisorption reaction with ethylene. The reactivity of the six positively charged clusters studied here varied sharply as a function of cluster size, indicating that ethylene is as sensitive a probe of the cluster surface chemistry as reported previously for ammonia. As with ammonia, the 39th and the 45th clusters were found to be particularly unreactive towards ethylene chemisorption. The results suggest that most silicon clusters in this moderately large size range are able to anneal to an energetically most favored crystalline form. Keywords: Silicon clusters, Ethylene chemisorption, Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Jul 23, 1990
Accession Number
ADA224928

Entities

People

  • K. R. Anderson
  • R. E. Smalley
  • Shigeo Maruyama

Organizations

  • Rice University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkenes
  • Annealing
  • Cells
  • Cellular Structures
  • Chemisorption
  • Chemistry
  • Classification
  • Cyclotron Resonance
  • Elements
  • Energy
  • Ethylenes
  • Governments
  • Mass Spectra
  • Military Research
  • Spectra
  • United States
  • Universities

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