Partial oxidation of ethanol in a membrane reactor for high purity hydrogen production |
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| Authors: | A Iulianelli S Liguori V Calabrò P Pinacci A Basile |
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| Affiliation: | 1. Institute on Membrane Technology of Italian National Research Council (ITM-CNR), Via P. Bucci Cubo 17/C, c/o University of Calabria, Rende (CS) 87036, Italy;2. Modeling Engineering Department, Via P. Bucci Cubo 39/C, University of Calabria, Rende (CS) 87036, Italy;3. Pietro Minacci, ERSE S.p.A., Via Rubattino 54, 20134 Milano, Italy |
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| Abstract: | Partial oxidation of ethanol was performed in a dense Pd–Ag membrane reactor over Rh/Al2O3 catalyst in order to produce a pure or, at least, COx-free hydrogen stream for supplying a PEM fuel cell. The membrane reactor performances have been evaluated in terms of ethanol conversion, hydrogen yield, COx-free hydrogen recovery and gas selectivity working at 450 °C, GHSV ∼ 1300 h−1, O2:C2H5OH feed molar ratio varying between 0.33:1 and 0.62:1 and in a reaction pressure range from 1.0 to 3.0 bar. As a result, complete ethanol conversion was achieved in all the experimental tests. A small amount of C2H4 and C2H4O formation was observed during reaction. At low pressure and feed molar ratio, H2 and CO are mainly produced, while at stronger operating conditions CH4, CO2 and H2O are prevalent compounds. However, in all the experimental tests no carbon formation was detected. As best results of this work, complete ethanol conversion and more than 40.0% COx-free hydrogen recovery were achieved. |
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| Keywords: | Hydrogen production Pd-based membrane reactor PEM fuel cell Partial oxidation of ethanol |
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