Hydrogenation of propyne verifying the harmony in surface and bulk compositions for Fe-Ni alloy nanoparticles

Takayuki Kojima, Shun Fujieda, Genichiro Kato, Satoshi Kameoka, Shigeru Suzuki, An Pang Tsai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigated the catalytic properties of Fe1-xNix nanoparticles prepared by a polyol-based method that allowed the precise control of their composition and structure. In the hydrogenation of propyne, the reaction rate decreased with decreasing x, which was in good agreement with the scenario that inactive Fe atoms dilute active Ni ensembles in particles at 0.55 ≤ x ≤ 1. For particles with x ≤ 0.46, it was suggested that slightly active Fe-Ni ensembles mainly contributed to the activity due to small population of active Ni ensembles. Since the change in catalytic properties with x was well explained by the assumption that the surface composition corresponded to x, it was concluded that the surface composition dominating the catalytic properties can be tuned by adjusting the entire composition of nanoparticles.

Original languageEnglish
Pages (from-to)776-781
Number of pages6
JournalMaterials Transactions
Volume58
Issue number5
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Catalysis
  • Iron-nickel
  • Nanoparticle
  • Surface composition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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