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  Simultaneous overcome of the equilibrium limitations in BSCF oxygen-permeable membrane reactors: Water splitting and methane coupling

Zhengweng, C., Jiang, H., Huixia, L., Baumann, S., Meulenberg, W. A., Voss, H., et al. (2012). Simultaneous overcome of the equilibrium limitations in BSCF oxygen-permeable membrane reactors: Water splitting and methane coupling. Catalysis today, 193(1), 2-7. doi:10.1016/j.cattod.2011.12.018.

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 Creators:
Zhengweng , Cao1, Author
Jiang, Heqing2, Author              
Huixia, Luo1, Author
Baumann, Stefan3, Author
Meulenberg, Wilhelm A.3, Author
Voss, Hartwig4, Author
Caro, Juergen1, Author
Affiliations:
1Leibniz Univ Hannover, Inst Phys Chem & Electrochem, 30167 Hannover, Germany, ou_persistent22              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445589              
3Forschungszentrum Juelich, Inst Energy & Climate Res, 52425 Juelich, Germany, ou_persistent22              
4BASF SE, 67056 Ludwigshafen, Germany, ou_persistent22              

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Free keywords: Water splitting; Methane coupling; Equilibrium limitation; Oxygen permeable membrane; Perovskite
 Abstract: The equilibrium limitations of water splitting and the coupling of methane to C-2 hydrocarbons (ethane + ethylene) were simultaneously overcome by using a perovskite Ba0.5Sr0.5Co0.8Fe0.2O3-delta (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 mu m 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 C-2 yield increased from 3.7% to 26% and 3.1% to 6.5% at 950 degrees C, respectively. In both experiments, the supported 2 wt.% Mn-5 wt.% Na2WO4 catalyst was used at 950 degrees 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 degrees C which is higher than 1 m(3) (STP) H-2 m(-2)h(-1). (c) 2011 Elsevier B.V. All rights reserved

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Language(s): eng - English
 Dates: 2012-10-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.cattod.2011.12.018
ISSN: 0920-5861
 Degree: -

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Title: Catalysis today
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 193 (1) Sequence Number: - Start / End Page: 2 - 7 Identifier: ISSN: 0920-5861
CoNE: https://pure.mpg.de/cone/journals/resource/954925564669