Periodic density functional and tight-binding quantum chemical molecular dynamics study of catalytic properties on γ-Al2O3 supported Pt catalysts

Ryota Ishimoto, Changho Jung, Hideyuki Tsuboi, Michihisa Koyama, Akira Endou, Momoji Kubo, Carlos A. Del Carpio, Akira Miyamoto

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We investigated the interactions of platinum metal clusters on the γ-alumina using a periodic density functional theory method. Results showed that electron transfer occurs between platinum metal clusters and γ-Al2O3. We also investigated NO adsorption properties (NO-Pt4/γ-Al2O3) in order to clarify the support effect on NO activation in terms of the elongation of N-O bond length and NO molecular charge. In our results, the support increases NO activation for three-fold sites but decreases it for on-top and bridge sites. Moreover, the support changes the site preference of NO adsorption. In addition, in order to clarify the support effect at finite temperature, we studied the dynamic behaviors of supported precious metal catalysts by using a tight-binding quantum chemical molecular dynamics program named 'Colors'.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalApplied Catalysis A: General
Volume305
Issue number1
DOIs
Publication statusPublished - May 17 2006

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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