Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 187-190 |
| Seitenumfang | 4 |
| Fachzeitschrift | Catalysis today |
| Jahrgang | 156 |
| Ausgabenummer | 3-4 |
| Publikationsstatus | Elektronisch veröffentlicht (E-Pub) - 21 März 2010 |
Abstract
The equilibrium controlled water dissociation and the kinetically controlled nitrous oxide (N2O) decomposition were studied in the perovskite BaCoxFeyZr1-x-yO3-δ (BCFZ) oxygen-permeable membrane reactor. By increasing the temperature or pressure difference and by feeding reducing gases like methane or ethane to the permeate side to consume the permeated oxygen, hydrogen production rate or N2O conversion could be enhanced. A hydrogen production rate of 3.1 cm3 min-1 cm-2 was obtained at 950 °C. When methane was used as the reducing gas on the shell side, the oxygen concentration on the N2O side can be kept at a low level, thus avoiding the inhibition of the N2O decomposition by adsorbed surface oxygen species. A complete decomposition of N2O for gas streams containing 20 vol.% N2O was achieved on the core side at 850 °C. Simultaneously, methane on the shell side was converted into synthesis gas with CO yield of above 80%. When feeding ethane to the shell side, the hydrogen from the thermal dehydrogenation of ethane can consume the permeated oxygen. At 850 °C, an ethane conversion of 85% and an ethylene selectivity of 86% were obtained.
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- Chemische Verfahrenstechnik (insg.)
- Katalyse
- Chemie (insg.)
Ziele für nachhaltige Entwicklung
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in: Catalysis today, Jahrgang 156, Nr. 3-4, 21.03.2010, S. 187-190.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor
AU - Jiang, Heqing
AU - Wang, Haihui
AU - Liang, Fangyi
AU - Werth, Steffen
AU - Schirrmeister, Steffen
AU - Schiestel, Thomas
AU - Caro, Jürgen
PY - 2010/3/21
Y1 - 2010/3/21
N2 - The equilibrium controlled water dissociation and the kinetically controlled nitrous oxide (N2O) decomposition were studied in the perovskite BaCoxFeyZr1-x-yO3-δ (BCFZ) oxygen-permeable membrane reactor. By increasing the temperature or pressure difference and by feeding reducing gases like methane or ethane to the permeate side to consume the permeated oxygen, hydrogen production rate or N2O conversion could be enhanced. A hydrogen production rate of 3.1 cm3 min-1 cm-2 was obtained at 950 °C. When methane was used as the reducing gas on the shell side, the oxygen concentration on the N2O side can be kept at a low level, thus avoiding the inhibition of the N2O decomposition by adsorbed surface oxygen species. A complete decomposition of N2O for gas streams containing 20 vol.% N2O was achieved on the core side at 850 °C. Simultaneously, methane on the shell side was converted into synthesis gas with CO yield of above 80%. When feeding ethane to the shell side, the hydrogen from the thermal dehydrogenation of ethane can consume the permeated oxygen. At 850 °C, an ethane conversion of 85% and an ethylene selectivity of 86% were obtained.
AB - The equilibrium controlled water dissociation and the kinetically controlled nitrous oxide (N2O) decomposition were studied in the perovskite BaCoxFeyZr1-x-yO3-δ (BCFZ) oxygen-permeable membrane reactor. By increasing the temperature or pressure difference and by feeding reducing gases like methane or ethane to the permeate side to consume the permeated oxygen, hydrogen production rate or N2O conversion could be enhanced. A hydrogen production rate of 3.1 cm3 min-1 cm-2 was obtained at 950 °C. When methane was used as the reducing gas on the shell side, the oxygen concentration on the N2O side can be kept at a low level, thus avoiding the inhibition of the N2O decomposition by adsorbed surface oxygen species. A complete decomposition of N2O for gas streams containing 20 vol.% N2O was achieved on the core side at 850 °C. Simultaneously, methane on the shell side was converted into synthesis gas with CO yield of above 80%. When feeding ethane to the shell side, the hydrogen from the thermal dehydrogenation of ethane can consume the permeated oxygen. At 850 °C, an ethane conversion of 85% and an ethylene selectivity of 86% were obtained.
KW - Membrane reactor
KW - NO decomposition
KW - Oxygen removal
KW - Perovskite
KW - Water dissociation
UR - http://www.scopus.com/inward/record.url?scp=77958092422&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2010.02.027
DO - 10.1016/j.cattod.2010.02.027
M3 - Article
AN - SCOPUS:77958092422
VL - 156
SP - 187
EP - 190
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
IS - 3-4
ER -