Preparation of Macro-Porous NiAl2O4 as Catalytic Support for Synthetic Natural Gas Synthesis in Fluidized-Bed Process

摘要

A nickel based macro-porous catalyst, which can be used as the catalytic support for SNG (synthetic natural gas) synthesis in the fluidized bed process, was synthesized using nano-sized polymer beads as a template. The nano-sized polymer beads used as a template for the formation of macro-pores were synthesized using a suspension polymerization method. Macro-porous nickel aluminate was synthesized from nickel nitrate, aluminum nitrate and colloidal polystyrene solutions. The mixture slurry was treated thermally at 650 degrees C for 5 h under argon, and then at 800 degrees C for 5 h under atmospheric conditions. The morphology and crystal structure of the macro-porous nickel aluminate were analyzed by X-ray diffraction and scanning electron microscopy. The attrition resistance and catalytic activity of the nickel-based macro-porous catalyst were investigated. The nickel based macro-porous catalyst showed sufficiently high attrition and activity for the fluidized-bed SNG synthesis process owing to its dual structure.