Abstract
Abstract Bio-fuel production from the renewable resource, such as biomass and its components, becomes increasingly attractive in views of the depletion of fossil fuel and the resulted environmental problems caused by excessive use of these unsustainable energy. In this study, we provide a novel and efficient technology for high quality oxygen-containing fuel production from the lignin bio-oil using cost-effective catalyst of Ni/MgO. guaiacol was chosen as the model compound because it is general one of the most abundant component in lignin bio-oil and has almost all characteristic functional group of lignin depolymerization products. The results demonstrate that guaiacol can be efficient and selective converted over the Ni/MgO. Particularly, calcination temperature has a significant effect on the Ni/MgO catalyst structure and surface properties, leading to distinct difference on the lignin bio-oil upgradation performance. When it is calcined at 850 ˚C, Ni/MgO shows the best catalyst activity. 98% guaiacol conversion is obtained with 97% cyclohexanol selectivity and 3% phenol selectivity at 160 °C for 4 h under 3 MPa of hydrogen pressure, indicating that it would be a promising strategy for the renewable lignocellulosic biomass valorization.
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