One-pot microwave-assisted combustion synthesis of Ni-Al2O3 nanocatalysts for hydrogen production via dry reforming of methane

dc.contributor.authorMelo, Marcus Antônio de Freitas
dc.contributor.authorMedeiros, Rodolfo Luiz Bezerra de Araújo
dc.contributor.authorFigueredo, Gilvan Pereira de
dc.contributor.authorMacedo, Heloísa Pimenta de
dc.contributor.authorOliveira, Ângelo Anderson Silva de
dc.contributor.authorRabelo Neto, Raimundo C.
dc.contributor.authorMelo, Dulce Maria de Araújo
dc.contributor.authorBraga, Renata Martins
dc.date.accessioned2021-12-08T12:40:57Z
dc.date.issued2020-03-01
dc.description.embargo2030-12
dc.description.resumoNi-based catalysts supported on Al2O3 were obtained via a simple, low cost and fast one-pot microwave-assisted combustion synthesis. The effect of fuel content (urea) was investigate. It was observed that the fuel ratio greatly influences the catalysts properties and performance. The results showed that the catalyst synthesized with low fuel content (Ni-LU) presented high specific surface area (265 m2/g), high degree of reduction and smaller nanometric Ni particles (~15 nm). In addition, the catalytic tests carried out at 700 °C for 20 h (GHSV = 72 Lh−1g−1) revealed high activity with low coke deposition. Further investigations were conducted on Ni-LU catalyst in order to better understand its catalytic properties. In-situ X-ray diffraction analysis (using synchrotron radiation) was used to evaluate the Ni particle size during the DRM, and indicated the sintering of Ni particles during the first hour of catalytic reaction. Furthermore, small amount of carbon nanotubes (CNT) with Ni particles encapsulated were observed by TEM analysispt_BR
dc.identifier.citationMEDEIROS, R. L. B. A.; FIGUEREDO, G. P.; MACEDO, H. P.; A.S.; OLIVEIRA, Â.; RABELO NETO, R. C.; MELO, D. M. A.; BRAGA, R. M.; MELO, M. A. F.. One-pot microwave-assisted combustion synthesis of Ni-Al2O3 nanocatalysts for hydrogen production via dry reforming of methane. FUEL, v. ., p. 119511, 2020. Disponível em: https://www.sciencedirect.com/science/article/pii/S0016236120325072. Acesso em: 05 out. 2021. https://doi.org/10.1016/j.fuel.2020.119511.pt_BR
dc.identifier.doi10.1016/j.fuel.2020.119511
dc.identifier.issn0016-2361
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/45270
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.subjectDry reforming of methanept_BR
dc.subjectHydrogenpt_BR
dc.subjectNickelpt_BR
dc.subjectOne-pot synthesispt_BR
dc.subjectMicrowave combustionpt_BR
dc.titleOne-pot microwave-assisted combustion synthesis of Ni-Al2O3 nanocatalysts for hydrogen production via dry reforming of methanept_BR
dc.typearticlept_BR

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