中孔炭材料的制备及吸附性能的研究

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）、扫描电镜（SEM）、低温N2自动吸附、甲醛和VB12饱和吸附等对样品形貌、孔结构和吸附性能进行了研究。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1012m^2／g；材料对VB12大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。

STUDY ON PREPARATION AND ADSORPTION PROPERTIES OF MESOPOROUS CARBONS

The mesoporous carbons via the template method,tetraethoxy silane(TEOS)acted as the source of the template silica and phenol - formaldehyde resins as the carbon precursor,was prepared. FT - IR, SEM, N2 adsorption isotherms phenol formaldehyde and VB12 saturable adsorption were used to study on the pore structure and adsorption capacity of the prepared DKT carbon. The results showed that the pore diameter of porous carbon obtained by the template method was distributed in the range of 2nm~7nm,the mesoporous percent reached at 74. 6% ,with a high BET surface areas(SBET),1 012 m2/g. formaldehyde and VB12 saturation adsorption results indicated the mesoporous carbon had a better adsorption ability,especially for macromolecule. It explained that the template method could remarkably control the size of por ous carbon's diameter by controlling the hydrolysis of TEOS.