High-Purity Green Hydrogen Production by Bio-oil/Ethanol Mixtures Steam Reforming in Pd-Based Membrane Reactors

dc.contributor.authorIglesias-Vázquez, S.
dc.contributor.authorValecillos, J.
dc.contributor.authorRemiro, A.
dc.contributor.authorLanda, L.
dc.contributor.authorAlique, D.
dc.contributor.authorSantos-Carballes, A.J.
dc.contributor.authorSanz, R.
dc.contributor.authorCalles, J.A.
dc.contributor.authorBilbao, J.
dc.contributor.authorGayubo, A.G.
dc.date.accessioned2025-07-15T07:45:09Z
dc.date.available2025-07-15T07:45:09Z
dc.date.issued2023-06-30
dc.description.abstractThe use of a membrane reactor (MR) for the reforming of biomass derived oxygenates is a promising approach to produce pure hydrogen from renewable sources. In this study, a Pd membrane supported on a porous stainless-steel (PSS) tube was fabricated by Electroless Pore Plating (ELP- PP) and tested in the steam reforming (SR) of bio-oil stabilized with 25 wt.% ethanol. All reaction tests were conducted in a reaction setup with two consecutive steps: (i) the thermal treatment for the vaporization of the bio-oil/ethanol mixture and the controlled deposition of pyrolytic lignin, and (ii) the SR reaction in an upwards-flow bed reactor with a Ni-based catalyst obtained upon reduction of a NiAl2O4 spinel. The Pd membrane was allocated in the middle of the SR reactor for its use as a MR. The reaction conditions were maintained at 580 °C with steam/carbon ratio of 2.5, space time of 0.15 h, feed pressure in the range of 1-3.3 bar, 0.1 bar in the permeate side, and time on stream of 4 h. The results reveal the enhancement of the hydrogen yield when using the MR at 3.3 bar and with the lowest gas velocity, allowing a hydrogen recovery of 57.74% with 99.8% purity. Consequently, the total hydrogen production in the MR operating at 3.3 bar and 0.6 cm s-1 increased from 0.309 to 0.367 g H2 (g C)-1 if compared to the conventional reactor at 1 bar and 0.9 cm·s-1.
dc.identifier.citationIglesias-Vazquez S., Valecillos J., Remiro A., Landa L., Alique D., Santos-Carballes A.J., Sanz R., Calles J.A., Bilbao J., Gayubo A.G., 2023, High-purity Green Hydrogen Production by Bio-oil/ethanol Mixtures Steam Reforming in Pd-based Membrane Reactors, Chemical Engineering Transactions, 100, 259-264.
dc.identifier.doi10.3303/CET23100044
dc.identifier.issn2283-9216
dc.identifier.urihttps://hdl.handle.net/10115/92577
dc.language.isoen
dc.publisherAIDIC, The Italian Association of Chemical Engineering
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleHigh-Purity Green Hydrogen Production by Bio-oil/Ethanol Mixtures Steam Reforming in Pd-Based Membrane Reactors
dc.typeArticle

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2023 - Iglesias-Vazquez et al - High Purity Green H2 prod byh Bio-oit-EtOH mixturex.pdf
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