The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior
The kinetics of ammonia oxidation with oxygen over a Rh(110) surface were studied in the pressure range 10⁻⁵–10⁻⁴ mbar. Nitrogen was found to be the preferred product at low partial pressures ratios p<sub>O₂</sub> : p<sub>NH₃</sub>, while the NO pathway was favored with oxyge...
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Formato: | Articulo |
Lenguaje: | Inglés |
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2012
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/139733 |
Aporte de: |
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I19-R120-10915-139733 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Química Rhodium NH3 + O2 reaction Kinetic oscillations Single crystal |
spellingShingle |
Química Rhodium NH3 + O2 reaction Kinetic oscillations Single crystal Rafti, Matías Lovis, Florian Imbihl, Ronald The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
topic_facet |
Química Rhodium NH3 + O2 reaction Kinetic oscillations Single crystal |
description |
The kinetics of ammonia oxidation with oxygen over a Rh(110) surface were studied in the pressure range 10⁻⁵–10⁻⁴ mbar. Nitrogen was found to be the preferred product at low partial pressures ratios p<sub>O₂</sub> : p<sub>NH₃</sub>, while the NO pathway was favored with oxygen rich gas mixtures and at high temperature. The reactive sticking coefficient of O₂ 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. |
format |
Articulo Articulo |
author |
Rafti, Matías Lovis, Florian Imbihl, Ronald |
author_facet |
Rafti, Matías Lovis, Florian Imbihl, Ronald |
author_sort |
Rafti, Matías |
title |
The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
title_short |
The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
title_full |
The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
title_fullStr |
The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
title_full_unstemmed |
The O₂ + NH₃ Reaction Over Rh(110): Steady State Kinetics and Oscillatory Behavior |
title_sort |
o₂ + nh₃ reaction over rh(110): steady state kinetics and oscillatory behavior |
publishDate |
2012 |
url |
http://sedici.unlp.edu.ar/handle/10915/139733 |
work_keys_str_mv |
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bdutipo_str |
Repositorios |
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