Abstract
Porous TaC ceramics were successfully prepared by particle packing method in order to improve the high temperature adsorption properties of ceramics. A large number of circular steps can be found clearly on the surface of the porous ceramic, and TaC ceramic particles are polycrystalline structures (fcc structure of NaCl-type). Subsequently, a porous TaC ceramics growth model was proposed to explain the formation of the steps on the ceramic surface, which revealed that the main reason for this shape was the overflow of CO and the melt of Ta2O5. Additionally, the specific surface area and median pore diameter of porous TaC ceramics were 0.098 (m2/g) and 3129 nm, respectively. And the porosity of the porous TaC ceramics was as high as 65.321%. It was impressive that the adsorption effects of porous TaC ceramics are remarkable (dropped from 4244 NTU to 0.3 NTU) and recyclable.
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