Novel synthesis of nickel oxide microsphere with high surface area and its catalytic application for carbon dioxide reforming of methane

Abstract

Nickel oxide (NiO) microsphere with a large surface area was novelly synthesized through nickel bicarbonate (Ni(HCO₃)₂) precursor. The obtained nickel oxide (NiO) microsphere was characterized by X-ray pattern diffraction, scanning electron microscopy, CO₂ temperature-programmed desorption, H₂ temperature-programmed reduction, N₂ adsorption/desorption and laser scattering particle size distribution analyzer. It was found that nickel oxide (NiO) synthesized by the thermal decomposition of Ni(HCO₃)₂ through area hydrolysis, presented very nice microsphere with high surface area. The catalytic properties of obtained nickel oxide (NiO) microsphere were studied in the reaction of carbon dioxide reforming of methane where 91.3% conversion of CH₄ with 93% conversion of CO₂ was observed. Besides, the catalyst maintained high stability over 200 h on the stream.

Keywords

synthesis / NiO microsphere / large surface area / catalysis

References

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