Using Taixi coal and coal-based activated carbon as carbon source,sodium silicate as silicon source and Fe(NO_3)_3·9H_2O as catalyst,nano-silicon carbide powder was produced by sol-gel method via carbonthermal reduction way.The effect of n(Fe)∶n(Si)on the crystal phase and morphology were researched by means of XRD,SEM and BET.The results showed that,the stacking faults of SiC decreased with the increasing value of n(Fe)∶n(Si)when using Taixi coal as coal source and the morphology of SiC changed from partia...