Sustainable H2 generation via steam reforming of biogas in membrane reactors: H2S effects on membrane performance and catalytic activity |
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| Affiliation: | 1. Institute on Membrane Technology - Italian National Research Council - Via P. Bucci 17/C, Rende (CS), 87036, Italy;2. DIMES Dpt. of University of Calabria, Via P. Bucci 34/B, Rende (CS), 87036, Italy;3. Institut de Chimie des Milieux et Matériaux de Poitiers(IC2MP), Université de Poitiers, CNRS, SAMCat, 4 Rue Michel Brunet - B27 - TSA 51106, 86073 Poitiers Cedex 9, France;4. Mechanical Eng. Dpt. of the Dokuz Eylul University, Tinaztepe Yerleskesi Buca, Izmir, 35397, Turkey |
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| Abstract: | This study proposes the steam reforming of a synthetic biogas stream containing 200 ppm of H2S, carried out in a non-commercial supported Pd–Au/Al2O3 membrane reactor (7–8 μm selective layer thickness) at 823 K and 150 kPa over a non-commercial Rh(1%)/MgAl2O4/Al2O3 catalyst. This system is able to recover almost 80% of the total hydrogen produced during the reaction and shows good resistance to the H2S contamination, as confirmed by stable methane conversions for more than 400 h under operation. For comparison, the same reaction was carried out in a commercial self-supported Pd–Ag membrane (150 μm wall thickness), yielding a hydrogen recovery equal to 40% at 623 K and 200 kPa, and presenting stable methane conversions for less than 200 h under operation due to the effect of the H2S contamination. |
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| Keywords: | Membrane reactor Hydrogen Rh-based catalyst Biogas steam reforming |
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