Exsolution of Ni nanoparticles from La0.4Sr0.4Ti0.8Ni0.2O3-δ perovskite for ethanol steam reforming
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The escalating increase in global temperatures has highlighted hydrogen (H2) as a promising alternative clean energy carrier. Hydrogen can be derived from biofuels such as bioethanol, offering an efficient liquid carrier that addresses availability, storage, and distribution issues hindering a widespread use of H2. This study reports on the synthesis of La0.4Sr0.4Ti0.8Ni0.2O3-δ catalysts followed by the exsolution process to enhance catalytic activity for H2 production via ethanol steam reforming (ESR) reaction. Single-phase compounds with exsolved metallic nanoparticles were successfully tested for ESR, revealing an ethanol conversion rate of 40 % and over 40 % H2 production for the catalyst reduced at 1000 °C for 12 hours. Stability tests demonstrated the catalyst's capacity for regeneration in both water vapor and N2. The experimental data demonstrate that exsolving metallic nanoparticles is a viable strategy for producing a stable catalyst for the ESR reaction.
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PIAZZOLLA, FERNANDO; MORAES, TAMARA S.; FIGUEIREDO, STEFANY S.; PAULA, DRYADE F. de; VEIGA, EMERSON L. dos S.; RODELLA, CRISTIANE B.; FONSECA, FABIO C. Exsolution of Ni nanoparticles from La0.4Sr0.4Ti0.8Ni0.2O3-δ perovskite for ethanol steam reforming. Catalysis Today, v. 444, p. 1-11, 2025. DOI: 10.1016/j.cattod.2024.115011. Disponível em: https://repositorio.ipen.br/handle/123456789/48786. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.