Enhancing the catalytic activity of lanthanum-ceria fluorite for methane conversion in SOFC

dc.creatorVILELA, V.B.
dc.creatorTHYSSEN, V.V.
dc.creatorRODRIGUES, L.N.
dc.creatorFONSECA, F.C.
dc.date2021
dc.date2022-03-16T19:45:24Z
dc.date2022-03-16T19:45:24Z
dc.date.accessioned2023-09-28T14:21:24Z
dc.date.available2023-09-28T14:21:24Z
dc.identifier1938-5862
dc.identifierhttp://repositorio.ipen.br/handle/123456789/32804
dc.identifier1
dc.identifier103
dc.identifier10.1149/10301.1917ecst
dc.identifier0000-0003-0708-2021
dc.identifierSem Percentil
dc.identifier31.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9003023
dc.descriptionA2B2O7 compounds with tailored compositions exhibit catalytic properties in a variety of high-temperature reactions, such as oxidative coupling of methane (OCM). La2Ce2O7 performs well in OCM due to selective mobile oxygen species, and suitable alkaline sites. Doping with Ca2+ increases the alkalinity, which can considerably increase selectivity for C2 products in OCM. We have explored the combustion synthesis to obtain homogeneous Ca2+-doped La2Ce2O7 materials to use as a catalytic layer in SOFC reactors for methane direct conversion to C2. The addition of Ca2+ in the A site of La2Ce2O7 resulted in the disordered fluorite-type crystalline structure. The formation of superficial oxygen vacancies related to the active oxygen species, which may benefit the OCM reaction, was detected. Electrochemical characterization showed no significant dependence of the conductivity with Ca2+-doping.
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionFAPESP: 17/11937-4
dc.format1917-1925
dc.relationECS Transactions
dc.rightsopenAccess
dc.sourceInternational Symposium on Solid Oxide Fuel Cells, 17th (SOFC-XVII), July 18-23, 2021, Online
dc.subjectlanthanum oxides
dc.subjectcerium oxides
dc.subjectoxygen compounds
dc.subjectsolid oxide fuel cells
dc.subjectcatalysts
dc.titleEnhancing the catalytic activity of lanthanum-ceria fluorite for methane conversion in SOFC
dc.typeArtigo de peri??dico
dc.coverageI


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