Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor

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

Autoren

  • Heqing Jiang
  • Haihui Wang
  • Fangyi Liang
  • Steffen Werth
  • Steffen Schirrmeister
  • Thomas Schiestel
  • Jürgen Caro

Organisationseinheiten

Externe Organisationen

  • South China University of Technology
  • Thyssenkrupp AG
  • Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik (IGB)
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Details

OriginalspracheEnglisch
Seiten (von - bis)187-190
Seitenumfang4
FachzeitschriftCatalysis today
Jahrgang156
Ausgabenummer3-4
Frühes Online-Datum21 März 2010
PublikationsstatusVeröffentlicht - 31 Okt. 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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Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor. / Jiang, Heqing; Wang, Haihui; Liang, Fangyi et al.
in: Catalysis today, Jahrgang 156, Nr. 3-4, 31.10.2010, S. 187-190.

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

Jiang, H, Wang, H, Liang, F, Werth, S, Schirrmeister, S, Schiestel, T & Caro, J 2010, 'Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor', Catalysis today, Jg. 156, Nr. 3-4, S. 187-190. https://doi.org/10.1016/j.cattod.2010.02.027
Jiang H, Wang H, Liang F, Werth S, Schirrmeister S, Schiestel T et al. Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor. Catalysis today. 2010 Okt 31;156(3-4):187-190. Epub 2010 Mär 21. doi: 10.1016/j.cattod.2010.02.027
Jiang, Heqing ; Wang, Haihui ; Liang, Fangyi et al. / Improved water dissociation and nitrous oxide decomposition by in situ oxygen removal in perovskite catalytic membrane reactor. in: Catalysis today. 2010 ; Jahrgang 156, Nr. 3-4. S. 187-190.
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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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AU - Jiang, Heqing

AU - Wang, Haihui

AU - Liang, Fangyi

AU - Werth, Steffen

AU - Schirrmeister, Steffen

AU - Schiestel, Thomas

AU - Caro, Jürgen

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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.

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