Understanding silica-supported metal catalysts: Pd/silica as a case study

Byoung Koun Min, A. K. Santra, D. W. Goodman

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

Supported metal catalysts, particularly noble metals supported on SiO 2, have attracted considerable attention due to the importance of the silica-metal interface in heterogeneous catalysis and in electronic device fabrication. Several important issues, e.g., the stability of the metal-oxide interface at working temperatures and pressures, are not well-understood. In this review, the present status of our understanding of the metal-silica interface is reviewed. Recent results of model studies in our laboratories on Pd/SiO 2/Mo(112) using LEED, AES and STM are reported. In this work, epitaxial, ultrathin, well-ordered SiO 2 films were grown on a Mo(112) substrate to circumvent complications that frequently arise from the silica-silicon interface present in silica thin films grown on silicon.

Original languageEnglish
Pages (from-to)113-124
Number of pages12
JournalCatalysis Today
Volume85
Issue number2-4
DOIs
Publication statusPublished - 2003 Oct 15
Externally publishedYes

Keywords

  • Alloying and sintering
  • Films
  • Inter-diffusion
  • Metal clusters
  • Metal-support interaction
  • Oxide
  • Palladium
  • Silica
  • Silicide
  • SMSI
  • STM
  • Supported catalysts

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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