Simultaneous overcome of the equilibrium limitations in BSCF oxygen-permeable membrane reactors
Water splitting and methane coupling
- verfasst von
- Zhengwen Cao, Heqing Jiang, Huixia Luo, Stefan Baumann, Wilhelm A. Meulenberg, Hartwig Voss, Jürgen Caro
- Abstract
The equilibrium limitations of water splitting and the coupling of methane to C2 hydrocarbons (ethane + ethylene) were simultaneously overcome by using a perovskite Ba0.5Sr0.5Co0.8Fe 0.2O3-δ (BSCF) oxygen-permeable membrane reactor. Oxygen produced from thermal water splitting was transported through the BSCF membrane and consumed in the coupling of methane. The BSCF membrane consists of an about 70 μm thick dense BSCF layer on an about 0.8 mm thick porous BSCF layer as support. By applying the membrane reactor concept instead of a fixed bed reactor without oxygen supply, the methane conversion and C2 yield increased from 3.7% to 26% and 3.1% to 6.5% at 950 °C, respectively. In both experiments, the supported 2 wt.% Mn-5 wt.% Na2WO4 catalyst was used at 950 °C. Simultaneously, about 9% of the H2O injected was converted to hydrogen with a production rate of about 3.3 cm 3 min-1 cm-2 at 950 °C which is higher than 1 m3 (STP) H2 m-2 h-1.
- Organisationseinheit(en)
-
Institut für Physikalische Chemie und Elektrochemie
- Externe Organisation(en)
-
Max-Planck-Institut für Kohlenforschung
Forschungszentrum Jülich
BASF SE
- Typ
- Artikel
- Journal
- Catalysis today
- Band
- 193
- Seiten
- 2-7
- Anzahl der Seiten
- 6
- ISSN
- 0920-5861
- Publikationsdatum
- 15.10.2012
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Katalyse, Allgemeine Chemie
- Ziele für nachhaltige Entwicklung
- SDG 7 – Erschwingliche und saubere Energie
- Elektronische Version(en)
-
https://doi.org/10.1016/j.cattod.2011.12.018 (Zugang:
Geschlossen)
