Thermodynamic assessment of non-catalytic Ceria for syngas production by methane reduction and CO2 + H2O oxidation

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dc.contributor.authorBose, Archishman
dc.contributor.authorFarooqui, Azharuddin
dc.contributor.authorFerrero, Domenico
dc.contributor.authorSantarelli, Massimo
dc.contributor.authorLlorca, Jordi
dc.date.accessioned2019-11-20T06:03:10Z
dc.date.available2019-11-20T06:03:10Z
dc.date.issued2019-01-31
dc.description.abstractChemical looping syngas production is a two-step redox cycle with oxygen carriers (metal oxides) circulating between two interconnected reactors. In this paper, the performance of pure CeO2/Ce2O3 redox pair was investigated for low-temperature syngas production via methane reduction together with identification of optimal ideal operating conditions. Comprehensive thermodynamic analysis for methane reduction and water and CO2 splitting was performed through process simulation by Gibbs free energy minimization in ASPEN Plus®. The reduction reactor was studied by varying the CH4/CeO2 molar ratio between 0.4 and 4 along with the temperature from 500 to 1000 °C. In the oxidation reactor, steam and carbon dioxide mixture oxidized the reduced metal back to CeO2, while producing simultaneous streams of CO and H2 respectively. Within the oxidation reactor, the flow and composition of the mixture gas were varied, together with reactor temperature between 500 and 1000 °C. The results indicate that the maximum CH4 conversion in the reduction reactor is achieved between 900 and 950 °C with CH4/CeO2 ratio of 0.7–0.8, while, for the oxidation reactor, the optimal condition can vary between 600 and 900 °C based on the requirement of the final product output (H2/CO). The system efficiency was around 62% for isothermal operations at 900 °C and complete redox reaction of the metal oxide.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid5en
dc.identifier.citationBose, A., Farooqui, A., Ferrero, D., Santarelli, M. and Llorca, J., 2019. Thermodynamic assessment of non-catalytic Ceria for syngas production by methane reduction and CO 2+ H 2 O oxidation. Materials for Renewable and Sustainable Energy, 8(1), (5). DOI:10.1007/s40243-019-0142-3en
dc.identifier.doi10.1007/s40243-019-0142-3en
dc.identifier.eissn2194-1467
dc.identifier.endpage15en
dc.identifier.issn2194-1459
dc.identifier.issued1en
dc.identifier.journaltitleMaterials for Renewable and Sustainable Energyen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/9149
dc.identifier.volume8en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.relation.urihttps://link.springer.com/article/10.1007%2Fs40243-019-0142-3
dc.rights© The Author(s) 2019en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectOxygen carriersen
dc.subjectCeriaen
dc.subjectChemical loopingen
dc.subjectSyngasen
dc.subjectThermodynamic analysisen
dc.titleThermodynamic assessment of non-catalytic Ceria for syngas production by methane reduction and CO2 + H2O oxidationen
dc.typeArticle (peer-reviewed)en
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