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...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2012
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/139733 |
| Aporte de: |
| id |
I19-R120-10915-139733 |
|---|---|
| record_format |
dspace |
| 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 |
AT raftimatias theo2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior AT lovisflorian theo2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior AT imbihlronald theo2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior AT raftimatias o2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior AT lovisflorian o2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior AT imbihlronald o2nh3reactionoverrh110steadystatekineticsandoscillatorybehavior |
| bdutipo_str |
Repositorios |
| _version_ |
1764820458402742273 |