摘要
以石油渣油为原料,分别采取传统的水蒸气活化和类模板法制备多孔炭材料,并采用氮吸附、XRD和SEM等分析手段对得到的多孔炭进行了表征。结果表明,水蒸气活化制备的多孔炭以微孔为主,且随着活化时间的增加,比表面积增大,炭收率减小。而类模板法制备的多孔炭以中孔为主,且随着MgO/渣油配比值的增加,其比表面积随之增大,炭收率变化不大。
Porous carbons were prepared from oil residues by conventional steam activation and template-like methods, respectively. The resultant carbons were characterized by nitrogen adsorption, X-ray diffraction, and scanning electron microscope. The results show that for one thing the pore structure of steam activated porous carbon is mainly composed of micro-pores, for another the BET specific surface area increases and the carbon yield decreases with increasing activation time. While, the template-like porous carbon dominates in meso-pores. With increasing MgO/oil residues ratio, the BET specific surface area increases and the carbon yield decreases smoothly.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2009年第3期344-347,共4页
Journal of Materials Science and Engineering
关键词
渣油
多孔炭
水蒸气活化
乙酸镁
类模板法
oil residues
porous carbon
steam activation
magnesium acetate
template-like method
