Designed synthesis of nanostructured ZrO2 as active support for glycerol valorization reaction
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2023
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Ceramics International
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Designed synthesis of nanostructured ZrO2 as support for glycerol valorization reaction was investigated. The
nanocasting route was used to obtain the ZrO2 support possessing well-dispersed Cu and Zn nanoparticles. The
solids were fully characterized by High-resolution transmission electron microscopy (HRTEM), X-ray photoelectron
spectroscopy (XPS), X-ray diffraction (XRD), Electron paramagnetic resonance (EPR), N2-physisorption
isotherms, Temperature-programmed desorption of ammonia (NH3-TPD), Scanning electron microscopy coupled
to energy dispersive spectroscopy (SEM-EDS) and Fourier transform infrared (FTIR) spectroscopy measurements.
The resultant CuZn/ZrO2 catalyst presented here was distinguished by its unique mesostructured features and
defective sites formation. The promotional effect of Cu nanoparticles on the activity illustrated that the formation
of active acid sites of medium to strong strength can be modulated by adding a second metal to the catalyst. All
these properties provided active solids for acetalization of glycerol with aldehydes and ketones due to the
interaction between the active centers and the nanostructured support. Density functional theory (DFT) calculation
showed the most favorable mechanistic route of low energy for biofuel additives production.
Como referenciar
NASCIMENTO, JOAO P.S.; MARTINS, ANTONIO J.; BEZERRA, RITA de C.F.; BERTOLDO, GABRIELA M.; OLIVEIRA, ALCINEIA C.; BEZERRA, JOAO R.; ARAUJO, RINALDO S.; LANG, ROSSANO; OTUBO, LARISSA; RODRIGUEZ-AGUADO, E.; RODRIGUEZ-CASTELLON, E. Designed synthesis of nanostructured ZrO2 as active support for glycerol valorization reaction. Ceramics International, v. 49, n. 2, p. 1764-1778, 2023. DOI: 10.1016/j.ceramint.2022.09.140. Disponível em: http://repositorio.ipen.br/handle/123456789/33578. Acesso em: 20 Apr 2024.
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.