Abstract
Deoxygenation of stearic acid has been investigated over the supported Ni nanoparticles on the mesoporous activated carbon (MAC) under relatively mild conditions (260°C), where the MAC was obtained from Kraft lignin by H3PO4 activation. The precursor and catalyst have been characterized by X-ray diffraction (XRD), N2 adsorption–desorption measurements and transmission electron microscopy (TEM). The influence of the H2 pressure, Ni loading, reaction time, and initial concentration of stearic acid on the composition and yield of hydrocarbons has also been checked. A high C17 to C18 hydrocarbons yield of 81.3%, a C17 hydrocarbon selectivity of 94%, and a conversion of 100% were obtained at 260°C, 6 bar H2 pressure, and stearic acid concentration of 0.15 mol/L after 10 h of reaction time over the 25 wt % Ni/MAC catalyst. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 607–612, 2015
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