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Research Opportunities for Materials with Ultrafine Microstructures (1989) / Chapter Skim
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Pages 79-81

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From page 79...
... . It is now possible to create metal-oxide or metal-nitride films artificially in which the spacing of the phases is much smaller than was possible by conventional methods.
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From page 80...
... Variation of the particle size of supported metal catalysts in the range of 1 to 10 nm can have dramatic effects on the activity and selectivity. Reactions that have been reported to exhibit structure sensitivity include these broad classes: oxidation (generally rates decrease with decreasing particle size)
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From page 81...
... The importance of this research for understanding the catalytic properties of supported metal catalysts is demonstrated by comparisons of the adsorption properties and catalytic activity of single-crystal and supported noble-metal catalysts. In the past, most research with single crystals was carried out under ultrahigh-vacuum conditions.
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Key Terms

  • particle size
  • metal catalysts
  • supported metal
  • conventional methods
  • electronic structure

  • catalyst particle
  • grain size
  • catalytic properties


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