Carbon and SiC Macroscopic Beads from Ion-Exchange Resin Templates

摘要

Shaped porous carbon and SiC spheres were prepared using ion-exchange resins as templates. Silicate anions were first ion-exchanged to fix the resin polymer chains and prevent loss of shape during subsequent carbonization. The type of the resin used (G or MP) was of paramount importance for the macroshape and pore structure of the final materials. Very high-surface area carbons and relatively high-surface area SiC were prepared. This synthesis route appears to be a very promising way to manufacture the shape of SiC and C beads, which can be used in various applications fields.