摘要
以正硅酸乙酯为模板硅源,酚醛树脂为炭前驱体,运用模板法制备了中孔炭材料。并用红外光谱(FT-IR)、低温N2自动吸附、扫描电镜(SEM)、甲醛和VB12饱和吸附等对材料的结构及性能进行了测试与表征。结果表明:制备的炭材料孔径集中分布在2～7nm左右,且中孔孔隙率达到74.6%,比表面积达到1012m2/g;材料对VB12分子有较好的吸附性能。表明通过控制正硅酸乙酯的水解条件能制备孔径集中的中孔炭材料。
Mesoporous carbons were prepared using a template method with tetraethoxy silane （TEOS） as the silica template and phenol - formaldehyde resins as carbon precursor. FT - IIL SEM, N2 adsorption isotherms and VB12 saturation adsorption were used to characterize the pore structure and adsorption property of the as - prepared DKT carbon. The results show that the pore diameter of porous carbons obtained by the template method was in a range of 2 ～7 nab the mesoporous porosity reaches 74. 6%, with a high BET surface areas （SBET） of 1 012 m^2/g. The formaldehyde and VB12 saturation adsorption tests reveal that the mesoporous carbon had a better adsorption capability; especially this is the case for mesomolecules. It has demonstrated that the template method could remarkably control the size of porous carbons by simply controlling the hydrolysis of TEOS.
出处
《炭素技术》
CAS
CSCD
2006年第1期10-14,共5页
Carbon Techniques
关键词
正硅酸乙酯
酚醛树脂
凝胶
模板法
中孔炭
Tetraethoxy silane（TEOS）
phenol formaldehyde resin
gel
template method
mesoporous carbon
