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Autothermal reforming of ethanol in dense oxygen permeation membrane reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
53318 46962 2016 7 PDF Available
Title
Autothermal reforming of ethanol in dense oxygen permeation membrane reactor
Abstract

•A BSCF disk-type membrane reactor for hydrogen production.•The reactor has high chemical stability for 180 h in autothermal reaction.•The reaction condition of autothermal steam reforming of ethanol is determined.

Perovskite-type Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) material was synthesized by the combined EDTA–citric acid complexing method and the disk-type BSCF dense membrane reactor (DMR) was constructed for H2 production by ethanol oxidative steam reforming reaction. The autothermal reaction conditions in the DMR were obtained through optimizing the ethanol oxidative steam reforming reaction (EOSR). The results showed that the hydrogen yield decreases (3.5–3.2 mol/molEtOH) with the net heat of reaction Q decreases from 0 to −257 J/molEtOH because the oxygen permeation flux for the membrane increases with temperature. The hydrogen production is 3.5 mol/molEtOH at autothermal temperature of 750 °C and the oxygen permeation flux of the dense ceramic membrane reactor is 6.5 ml (STP)/cm2 min. The activation energy for oxygen permeation was 46.4 kJ/mol under the air/Ar gradient, as compared to about 20.1 kJ/mol under EOSR reaction, respectively. The BSCF DMR performed stably under the autothermal reaction condition was stable for at least 180 h. These results indicate the BSCF membrane holding the high oxygen permeation flux, the excellent phase reversibility and the good stability under the highly reducing atmosphere, shows great application potential for H2 production via the autothermal reaction.

Graphical abstractAutothermal steam reforming of ethanol (AESR) in DMR.Figure optionsDownload full-size imageDownload high-quality image (82 K)Download as PowerPoint slide

Keywords
Autothermal; Ethanol; Oxygen permeation; Membrane reactor; Oxidative steam reforming
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 264, 15 April 2016, Pages 214–220
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us