Abstract
Mesoporous and well-dispersed nickel–alumina composite aerogels with high surface area have been prepared by CO 2 supercritical drying of alcogels obtained by the fast sol–gel process. They were evaluated as catalysts in a batch reactor for the liquid-phase hydrogenation of benzophenone and soybean oil and showed excellent activity and accessibility of the metal particles. They were also characterized by nitrogen adsorption–desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) to explain their excellent catalytic performance in comparison with other alumina-supported nickel catalysts.
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