Structure and catalytic activity of copper, nickel, and platinum graphimets prepared from graphite intercalation compounds

G. Sirokmán, Á Mastalir, Á molnár, M. Bartók, Z. Schay, L. Guczi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Commercially available copper, nickel, and platinum graphimets prepared from intercalated graphite materials were investigated by XPS, TEM, XRD, DSC and chemisorption techniques. The catalytic activity was tested in hydrogenation reactions. The XPS, TEM and chemisorption data revealed only highly-dispersed platinum particles on the surface of platinum graphimet. Copper oxide was detected on the surface of copper graphimet by means of XPS and XRD, while chemical analysis indicated the presence of residual copper chloride. Nickel graphimet consisted of intercalated nickel chloride, encapsulated metallic nickel and nickel oxide particles. Small nickel particles emerged to the surface of the nickel graphimet after pretreatment in hydrogen at 673 K and pretreatments in oxygen resulted in the aggregation of nickel oxide particles. The catalytic activity is attributed to metallic nickel on the graphite surface.

Original languageEnglish
Pages (from-to)35-42
Number of pages8
JournalCarbon
Volume28
Issue number1
DOIs
Publication statusPublished - 1990

Keywords

  • Graphimet
  • catalysts
  • graphite intercalation
  • hydrogenation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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