The effect of H-2 and the presence of hot-O-(ads) during the decomposition of N2O on platinum

Robbie Burch, S.T. Daniells, John Breen, Peijun Hu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The decomposition of N2O was studied using a silica-supported Pt catalyst. The catalyst was found to exhibit short-lived activity at low temperatures to yield N-2 and O-(ads), the latter remained adsorbed on the surface and poisoned the active sites. Creation of hot-O-(ads) atoms during N2O decomposition is proposed to allow O-2 desorption at intermediate temperatures. Inclusion of H-2 as a reducing agent greatly enhanced the activity and suppressed low temperature deactivation. Simultaneous and sequential pulsing of N2O and H-2 showed that H-2 inclusion with the N2O gas stream produced the greatest activity. A mechanism involving H-(ads) addition to
Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalCatalysis Letters
Volume94
Publication statusPublished - 2004

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