模板法中孔炭材料的制备与表征  

PREPARATION AND CHARACTERIZATION OF MESOPOROUS CARBONS VIA TEMPLATE METHOD

作　　者：栾广贵[1] 刘振辉 荣海琴[1] 潘鼎[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海200051 [2]中国石油辽阳石化分公司炼油厂,辽宁辽阳111003

出　　处：《炭素技术》2006年第1期10-14,共5页Carbon Techniques

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.

关 键 词：正硅酸乙酯 酚醛树脂 凝胶 模板法 中孔炭 

分 类 号：TQ424.1[化学工程]