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Iron ore modified with alkaline earth metals for the chemical looping combustion of municipal solid waste derived syngas

Wang Haiming, Liu Guicai, Veksha Andrei, Dou Xiaomin, Giannis Apostolos, Lim Teik-Thye, Lisak Grzegorz

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URIhttp://purl.tuc.gr/dl/dias/BC843365-8B50-4A6F-87E2-C6B5153CD006-
Identifierhttps://doi.org/10.1016/j.jclepro.2020.124467-
Identifierhttps://www.sciencedirect.com/science/article/pii/S095965262034511X-
Languageen-
Extent11 pagesen
TitleIron ore modified with alkaline earth metals for the chemical looping combustion of municipal solid waste derived syngasen
CreatorWang Haimingen
CreatorLiu Guicaien
CreatorVeksha Andreien
CreatorDou Xiaominen
CreatorGiannis Apostolosen
CreatorΓιαννης Αποστολοςel
CreatorLim Teik-Thyeen
CreatorLisak Grzegorzen
PublisherElsevieren
Content SummaryThe redox performances of iron ore (IO) modified with different alkaline earth metals (AEM) as oxygen carriers (OCs) were evaluated with thermogravimetric analysis (TGA) and fluidized bed reactor experiments for the chemical looping combustion (CLC) of municipal solid waste (MSW) derived syngas. AEM oxides (BaO, CaO, and MgO) and AEM aluminates (BaAl2O4, CaAl2O4, and MgAl2O4) were systematically studied for their ability to promote the redox cycles performance of IO. Acid digestion, FESEM, and XRD analyses were conducted for the characterization of the OCs before and after redox reactions to investigate the promoting mechanism. It was found that the BaO-modified IO demonstrated the best reactivity with the reduction rate of 2.04%/min, which was twofold that of the pristine IO. AEM oxides presented superior redox performance than AEM aluminates owing to their strong interaction with Fe2O3 with the formation of AEM ferrites. The formed CaFe2O4 and MgFe2O4 with spinel structure and BaFe12O19 with hexagonal structure, as a result of the interaction, facilitated the lattice oxygen mobility and improved the reactivity of the modified IO. This interaction also increased the sintering resistance, while the morphology of the IO became more porous after redox cycles, which was also responsible for the improved performance during the long term CLC operation.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2023-04-27-
Date of Publication2021-
SubjectMSW syngasen
SubjectChemical loopingen
SubjectOxygen carrieren
SubjectOxygen vacanciesen
SubjectFerritesen
Bibliographic CitationH. Wang, G. Liu, A. Veksha, X. Dou, A. Giannis, T.-T. Lim, and G. Lisak, "Iron ore modified with alkaline earth metals for the chemical looping combustion of municipal solid waste derived syngas," J. Cleaner Prod., vol. 282, Feb. 2021, doi: 10.1016/j.jclepro.2020.124467.en

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