The O 2 + NH 3 reaction over Rh(110): Steady state kinetics and oscillatory behavior

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Matías Rafti
  • Florian Lovis
  • Ronald Imbihl

Organisationseinheiten

Externe Organisationen

  • Universidad Nacional de La Plata
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Details

OriginalspracheEnglisch
Seiten (von - bis)16-21
Seitenumfang6
FachzeitschriftCatalysis letters
Jahrgang142
Ausgabenummer1
PublikationsstatusVeröffentlicht - 30 Okt. 2011

Abstract

The kinetics of ammonia oxidation with oxygen over a Rh(110) surface were studied in the pressure range 10 -5-10 -4mbar. Nitrogen was found to be the preferred product at low partial pressures ratios P 02 : P NH3, while the NO pathway was favored with oxygen rich gas mixtures and at high temperature. The reactive sticking coefficient of O 2 reaches up to 0.05 under steady state conditions. Pronounced hysteresis effects in the reaction rates were found in T-cycling experiments. Sustained oscillations in the reaction rates occurred under isothermal conditions at T = 620 K at a total pressure of 4 × 10 -5 mbar.

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The O 2 + NH 3 reaction over Rh(110): Steady state kinetics and oscillatory behavior. / Rafti, Matías; Lovis, Florian; Imbihl, Ronald.
in: Catalysis letters, Jahrgang 142, Nr. 1, 30.10.2011, S. 16-21.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Rafti M, Lovis F, Imbihl R. The O 2 + NH 3 reaction over Rh(110): Steady state kinetics and oscillatory behavior. Catalysis letters. 2011 Okt 30;142(1):16-21. doi: 10.1007/s10562-011-0722-z
Rafti, Matías ; Lovis, Florian ; Imbihl, Ronald. / The O 2 + NH 3 reaction over Rh(110) : Steady state kinetics and oscillatory behavior. in: Catalysis letters. 2011 ; Jahrgang 142, Nr. 1. S. 16-21.
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AU - Lovis, Florian

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N1 - Funding Information: Acknowledgments Matías Rafti gratefully acknowledges CONI-CET-UNLP (Argentina) and DAAD (Germany) for providing with scholarships and financial assistance. Florian Lovis is grateful to the Zentrum für Festkörperchemie und Neue Materialen (ZFM) and the state of Niedersachsen for providing a Georg Christoph Lichtenberg scholarship.

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