Steam reforming of bio-oil stabilized with ethanol over a Ni/MgAl2O4 catalyst in a Pd-membrane reactor
dc.contributor.author | Iglesias-Vázquez, S. | |
dc.contributor.author | Valecillos, J. | |
dc.contributor.author | Remiro, Aingeru | |
dc.contributor.author | Elordi, Gorka | |
dc.contributor.author | Alique, D. | |
dc.contributor.author | Santos-Carballes, A.J. | |
dc.contributor.author | Sanz, R. | |
dc.contributor.author | Calles, J.A. | |
dc.contributor.author | Bilbao, J. | |
dc.contributor.author | Gayubo, A.G. | |
dc.date.accessioned | 2025-07-15T06:54:07Z | |
dc.date.available | 2025-07-15T06:54:07Z | |
dc.date.issued | 2025-07-07 | |
dc.description.abstract | A new membrane reactor (MR) has been used in the steam reforming (SR) of a feed of raw bio-oil stabilized with 25 wt% ethanol over a Ni/MgAl2O4 catalyst, comparing the results (yield of H2 and byproduct gases) to those reached in a conventional reactor (CR). The reaction setup involves two steps in series: a down-flow tube (at 500 ºC) for the vaporization of the feed and controlled removal of pyrolytic lignin (PL) from the oxygenates in the biooil, followed by an up-flow reactor provided with a composite Pd membrane supported on a porous stainless steel (PSS) tube containing a CeO2 intermediate layer (Pd/CeO2/PSS). In the MR configuration (with permeate pressure of 0.2 bar absolute), a H2 yield of 82 % was achieved at 550 ºC, space time of 2.8 h, S/C ratio of 1.55 and 3 bar in the retentate (reactor). This result significantly improves those reached in CR, even at 1 bar and 600 ºC. The S/C ratio in the feed must be limited in the MR configuration to avoid restrictions in H2 flux through the Pdmembrane caused by a higher gas dilution and concentration-polarization effect, as observed when the S/C ratio is increased up to 2.2. Similarly, a higher retentate pressure has a negative effect on the H2 yield due to its negative impact on the equilibrium of methane SR, that overcomes its benefits on the H2 permeation through the membrane. A promising performance of the membrane and catalyst has been obtained, thus demonstrating good prospects for their use in the sustainable production of H2 from lignocellulosic biomass | |
dc.identifier.citation | Sergio Iglesias-Vázquez, José Valecillos, Aingeru Remiro, Gorka Elordi, David Alique, Alejandro J. Santos-Carballes, Raúl Sanz, José A. Calles, Javier Bilbao, Ana G. Gayubo, Steam reforming of bio-oil stabilized with ethanol over a Ni/MgAl2O4 catalyst in a Pd-membrane reactor, Catalysis Today, Volume 460, 2025, 115445, ISSN 0920-5861, https://doi.org/10.1016/j.cattod.2025.115445 | |
dc.identifier.doi | 10.1016/j.cattod.2025.115445 | |
dc.identifier.issn | 0920-5861 | |
dc.identifier.uri | https://hdl.handle.net/10115/92537 | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.rights | Attribution-NonCommercial 4.0 International | en |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.subject | hydrogen | |
dc.subject | steam reforming | |
dc.subject | Pd membrane reactor | |
dc.subject | Bio-oil | |
dc.subject | Ni/MgAl2O4catalyst | |
dc.title | Steam reforming of bio-oil stabilized with ethanol over a Ni/MgAl2O4 catalyst in a Pd-membrane reactor | |
dc.type | Article |
Archivos
Bloque original
1 - 1 de 1
Cargando...
- Nombre:
- 2025 - Iglesias-Vazquez et al - Steam reforming of bio-oil stabilized with ethanol eove a Ni-MgAl2O4 xxx.pdf
- Tamaño:
- 2.04 MB
- Formato:
- Adobe Portable Document Format