3D honeycomb-like silica (OMMs-SiO2) was prepared and modified by ZrO2 via sol-gel coating method (OMMs-ZrO2-SiO2). The average cell diameter of the aforementioned material is about 10 nm. The highly dispersed Ni nanoparticles were immobilized to cell of honeycomb by impregnation method. The synthesized catalysts were characterized by SEM, TEM, XRD, H2-TPR, TGA and N2 adsorption-desorption techniques. Contributed by confinement of honeycomb-like silica, the NiO/OMMs-ZrO2-SiO2 catalyst showed superior anti-sintering and coking ability compared with conventional catalysts. Furthermore, improving the oxygen storage capacity from ZrO2 and highly dispersed active-sites afford excellent catalytic activity. CH4 conversion up to 90%-92% was obtained. Ni nanoparticles hardly increased after reaction due to the blocking effect of honeycomb cell.

Confining Ni nanoparticles in honeycomb-like silica for coking and sintering resistant of partial oxidation of methane

255th National Meeting (2018)

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