Dynamics of hydrogen spillover on Pt/γ-Al2O3 catalyst surface: A quantum chemical molecular dynamics study

Farouq Ahmed, Md Khorshed Alam, Ai Suzuki, Michihisa Koyama, Hideyuki Tsuboi, Nozomu Hatakeyama, Akira Endou, Hiromitsu Takaba, Carlos A. Del Carpio, Momoji Kubo, Akira Miyamoto

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

The hydrogen spillover mechanism has earned intensive interest in the past decades because it plays a vital role in emerging technologies for the reduction of NOx in automobile exhausts. Hydrogen spillover arises in hydrogen-catalyzed reactions on a supported metal catalyst. In the present study, we applied quantum chemical molecular dynamics (QCMD) to investigate the mechanism of the hydrogen spillover process on a Pt/γ-Al2O 3 catalyst surface for the first time. The direct observation of dissociative adsorption of hydrogen and diffusion of hydrogen on a Pt/γ-Al2O3 catalyst surface were successfully investigated. The diffusion of the hydrogen atom in the gas phase explains the high reactivity observed in the hydrogen spillover mechanism.

Original languageEnglish
Pages (from-to)15676-15683
Number of pages8
JournalJournal of Physical Chemistry C
Volume113
Issue number35
DOIs
Publication statusPublished - 2009 Sep 3

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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