摘要
以沥青为原料,采用热缩聚法合成了一系列不同各向异性组分含量的中间相沥青(MP)。以不同各向异性组分含量的中间相沥青为原料,采用KOH活化法制备了中间相沥青基活性炭(MP-AC)。使用透反射偏振光显微镜对中间相沥青的显微结构进行静态观察,考察了不同恒温时间中间相沥青的收率和光学显微形态的变化,使用物理吸附仪对MP-AC的比表面积进行了考察。结果表明:反应温度在410℃,恒温6.5 h时可以得到各向异性组分含量约为100%的优质广域型中间相沥青;MP中各向异性组分含量的不同对MP-AC的比表面积影响不大。
Mesophase pitches （MPs） with different anisotropic contents were prepared by heat-treatment in the presence of nitrogen from pitch. MP-based activated carbons （MP-AC） were prepared from MP with different anisotropic contents by KOH activation. Polarized light microscope was used to study the microstructures of MP. The surface area of MP-AC was characterized by the physical adsorption of nitrogen gas at 77 K. The effects of heat treatment time on the yield and anisotropic texture were investigated, and the results indicate that the large domain texture mesophase pitch with purity of 100% was obtained at the condensation temperature of 410℃ for 6.5 h. And the effect of anisotropie content on surface area of MP-AC is limited.
出处
《炭素技术》
CAS
北大核心
2014年第5期1-4,共4页
Carbon Techniques
基金
国家自然科学基金资助项目(21276045)
关键词
中间相沥青
调制
热缩聚
各向异性组分含量
Mesophase pitch
preparation
thermal condensation
anisotropic content
