dc.contributor.author | Udaeta Gordón, Joseba | |
dc.contributor.author | Oregui Bengoechea, Mikel | |
dc.contributor.author | Torre, Francesco | |
dc.contributor.author | Uranga, Nerea | |
dc.contributor.author | Hernáiz, Marta | |
dc.contributor.author | Lucio Castillero, Beatriz | |
dc.contributor.author | Arias Ergueta, Pedro Luis | |
dc.contributor.author | Palomo del Barrio, Elena | |
dc.contributor.author | Doppiu, Stefania | |
dc.date.accessioned | 2024-07-04T16:33:57Z | |
dc.date.available | 2024-07-04T16:33:57Z | |
dc.date.issued | 2024-06 | |
dc.identifier.citation | ACS Applied Materials & Interfaces 16(26) : 33270-33284 (2024) | es_ES |
dc.identifier.issn | 1944-8252 | |
dc.identifier.uri | http://hdl.handle.net/10810/68774 | |
dc.description.abstract | In this work, the Na2CO3 of the sodium manganese ferrite thermochemical cycle was substituted by different eutectic or eutectoid alkali carbonate mixtures. Substituting Na2CO3 with the eutectoid (Li0.07Na0.93)2CO3 mixture resulted in faster hydrogen production after the first cycle, shifting the hydrogen production maximum toward shorter reaction times. Thermodynamic calculations and in situ optical microscopy attributed this fact to the partial melting of the eutectoid carbonate, which helps the diffusion of the ions. Unfortunately, all the mixtures exhibit a significant loss of reversibility in terms of hydrogen production upon cycling. Among them, the nonsubstituted Na mixture exhibits the highest reversibility in terms of hydrogen production followed by the 7%Li-Na mixture, while the 50%Li-Na and Li-K-Na mixtures do not produce any hydrogen after the first cycle. The loss of reversibility is attributed to both the formation of undesired phases and sintering, the latter being more pronounced in the eutectic and eutectoid alkali carbonate mixtures, where the melting of the carbonate is predicted by thermodynamics. | es_ES |
dc.description.sponsorship | This Project is funded by the Department of Economic Development, Sustainability and Environment of the Basque Government (CICe 2019-KK-2019/00097 and H2BASQUE-KK-2021/00054), and by the Spanish Government (H2-Plan-KC-2021/00002 founded with the Next Generation EU). The authors thank technical and human support provided by SGIker (UPV/EHU/ERDF, EU). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | ACS | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | thermochemical water splitting | es_ES |
dc.subject | sodium manganese ferrite cycle | es_ES |
dc.subject | atomic substitution | es_ES |
dc.subject | carbonation | es_ES |
dc.subject | decarbonation | es_ES |
dc.subject | hydrogen production | es_ES |
dc.title | Sodium Manganese Ferrite Water Splitting Cycle: Unravelling the Effect of Solid–Liquid Interfaces in Molten Alkali Carbonates | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2024 The Authors. Published by American Chemical Society. This publication is licensed under
CC-BY 4.0. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acsami.4c00549 | es_ES |
dc.identifier.doi | 10.1021/acsami.4c00549 | |
dc.departamentoes | Ingeniería química y del medio ambiente | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza | es_ES |