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Performance of an oxygen-permeable membrane reactor for partial oxidation of methane in coke oven gas to syngas

Perovskite-type oxygen-permeable membrane reactors of BaCo 0.7Fe 0.2Nb 0.1O 3− δ packed with Ni-based catalyst had high oxygen permeability and could be used for syngas production by partial oxidation of methane in coke oven gas (COG). The BCFNO membrane itself had a poor catalytic activity to parti...

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Published in:Fuel (Guildford) 2011, Vol.90 (1), p.324-330
Main Authors: Zhang, Yuwen, Liu, Jiao, Ding, Weizhong, Lu, Xionggang
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Ding, Weizhong
Lu, Xionggang
description Perovskite-type oxygen-permeable membrane reactors of BaCo 0.7Fe 0.2Nb 0.1O 3− δ packed with Ni-based catalyst had high oxygen permeability and could be used for syngas production by partial oxidation of methane in coke oven gas (COG). The BCFNO membrane itself had a poor catalytic activity to partial oxidation of CH 4 in COG. After the catalyst was packed on the membrane surface, 92% of methane conversion, 90% of H 2 selectivity, 104% of CO selectivity and as high as 15 ml/cm 2/min of oxygen permeation flux were obtained at 1148 K. During continuously operating for 550 h at 1148 K, no degradation of performance of the BCFNO membrane reactor was observed under the condition of hydrogen-rich COG. The possible reaction pathways were proposed to be an oxidation-reforming process. The oxidation of H 2 in COG with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and H 2O reacts with CH 4 by reforming reactions to form H 2 and CO.
doi_str_mv 10.1016/j.fuel.2010.08.027
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source ScienceDirect Freedom Collection 2022-2024
subjects Alternative fuels. Production and utilization
Applied sciences
Catalysts
Cog
Coke oven gas
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Flux
Fuels
Hydrogen
Hydrogen production
Membranes
Methane
Mixed-conducting oxygen-permeable membrane reactor
Oxidation
Permeation
Reaction pathways
Reactors
title Performance of an oxygen-permeable membrane reactor for partial oxidation of methane in coke oven gas to syngas
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