Resumo

ALMIRON BACA, Jonathan et al. Synthesis of ni-cu catalysts by impregnation to obtain carbon nanofibers by catalytic decomposition of methane. Rev. Soc. Quím. Perú [online]. 2018, vol.84, n.1, pp.91-196. ISSN 1810-634X.

This paper reports the synthesis by impregnation method and the characterization of Ni-Cu catalyst supported on alumina (Al O ). Three catalysts with different Ni-Cu atomic ratios (7:1, 9:1 and 11:1) were synthesized. These catalysts were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), textural BET analysis and TPR. In addition, it has been produced carbon nanofibers by catalytic decomposition of methane at 600 °C. The results suggest that nickel loading influences the carbon deposited on. Thus, the catalyst with greater Ni:Cu atomic ratio of 11:1 showed the better carbon yield (19,4 gC/gcat). Moreover, the structural properties of the carbon deposited are dependent of the catalyst composition, going on from a thin and long carbon over Ni-Cu 11:1 catalyst to a broad and shorter carbon over Ni:Cu 7:1 and 9:1 catalysts

Palavras-chave : Supported catalyst; Ni-Cu/Al O; impregnation; decomposition of methane; carbon nanofiber.

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