Synthesis and characterization of mesoporous silicon carbide

被引：182

作者：

Jin, GQ ^{[1
]}

Guo, XY ^{[1
]}

机构：

[1] Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2003年 / 60卷 / 1-3期

关键词：

mesoporous SiC; sol-gel process; high surface area silicon carbide;

D O I：

10.1016/S1387-1811(03)00378-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A modified sol-gel method is proposed for the preparation of mesoporous silicon carbide. In this method, tetraethoxysilane (TEOS) and phenolic resin are used for preparing a binary carbonaceous silicon xerogel, and nickel nitrate is employed in the sol-gel process as a pore-adjusting reagent. SiC was produced in the carbothermal reduction of the binary xerogel at 1250 degreesC in an argon flow (40 cm(3)min(-1)) and purified by removing excess silica, carbon and other impurities. The purified SiC sample was characterized by XRD, SEM, TEM, and N-2 adsorption, and the results showed that the SiC sample had a surface area of 112 m(2) g(-1) (BET) and an average pore diameter of about 10 nm. (C) 2003 Elsevier Science Inc. All rights reserved.

引用

页码：207 / 212

页数：6

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