Synthesis of High Surface Area Porous Silicon Carbide by a Modified Sol-Gel Method
High surface area porous silicon carbide was synthesized by employing polymethylhydrosiloxane (PMHS) as soft template in the sol-gel process. In the sol-gel method, furfuryl alcohol and tetraethoxysilane were used respectively as carbon and silicon precursors for preparing a carbonaceous silica xerogel. PMHS was employed as pore-adjusting agent in the sol-gel process. The puriﬁed SiC sample was characterized by XRD、FTIR、SEM、HRTEM and BET. The results show that the SiC products are found to have high specific surface area of 125 m2 /g and an average pore diameter of about 17 nm. PMHS has important effect on the surface area of the SiC products.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
D. H. Wang and X. Fu, "Synthesis of High Surface Area Porous Silicon Carbide by a Modified Sol-Gel Method", Advanced Materials Research, Vols. 194-196, pp. 562-565, 2011