Gradual Internal Reforming process: development of catalyst layer for Solid Oxide Fuel Cells operating with methane and bioethanol
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2018
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INTERNATIONAL CONGRESS ON CERAMICS, 7th; CONGRESSO BRASILEIRO DE CERÂMICA, 62.
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In the gradual internal reforming (GIR) process, the water released by the
electrochemical oxidation of hydrogen at the anode is used for the steam reforming of
the fuel in the catalytic layer deposited over the anode of the SOFC. We have
developed a highly active ceria-based catalytic layer that efficiently converts the
primary fuel (ethanol or methane) into hydrogen using the electrochemically-generated
steam. Ir/CGO catalyst was pretreated at 1173 K in He flow with less than 0.5 ppm O2
prior to catalytic testing. The catalyst consists of Ir nanoparticles (mean size of 4 nm in
diameter) supported on the surface of sub-micron gadolinia-doped ceria particles and
forms a continuous porous layer (~25 ?m thick) over the Ni-based anode. An anodesupported
solid oxide fuel cell (SOFC) was continuously operated for more than 300
hours with direct methane or (anhydrous) ethanol, with a high current density. The
catalytic layer associated with the GIR process avoids the carbon deposition on the
anode material surface. Such results represent a significant advance towards the
development of fuel-flexible SOFC operating with methane or ethanol.
Como referenciar
STEIL, M.C.; GEORGES, S.; GELIN, P.; UHLENBRUCK, S.; FONSECA, F.C. Gradual Internal Reforming process: development of catalyst layer for Solid Oxide Fuel Cells operating with methane and bioethanol. In: INTERNATIONAL CONGRESS ON CERAMICS, 7th; CONGRESSO BRASILEIRO DE CERÂMICA, 62., June 17-21, 2018, Foz do Iguaçu, PR. Abstract... p. 542-542. Disponível em: http://repositorio.ipen.br/handle/123456789/29696. Acesso em: 20 Mar 2026.
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