一步模板炭化法制备新型沥青基中孔炭材料(英文)  

New mesoporous carbons prepared from pitch by simultaneous templating and carbonization

作　　者：王艳素[1] 王成扬[1] 陈明鸣[1] 

机构地区：[1]天津大学化工学院,绿色合成与转化教育部重点实验室,天津300072

出　　处：《新型炭材料》2009年第2期187-190,共4页New Carbon Materials

基　　金：The Key Program of Frontier Technology and Foundamentals of Its Application in Tianjin~~

摘　　要：以乙酸镁和柠檬酸镁为模板(MgO)镁源,沥青为碳前驱体,在氮气氛中950℃一步炭化制得高表面积中孔炭材料。采用1mol/L的HCl去模,并将炭材料洗涤至中性。采用低温N2吸附测得炭材料的比表面积和孔径分布,透射电镜观察炭材料的内部结构特征。结果表明:尽管未经活化,所得炭材料中的孔大多为中孔,BET比表面积达到1295m2/g,当以柠檬酸镁为MgO前驱体时,所得炭材料的收率可高达50%。Mesoporous carbons with high surface area were successfully prepared from a pitch using MgO as a template. The mixtures of the pitch and the MgO precursors （magnesium acetate and citrate） with different mass ratios in powder form were carbonized at 950℃ in nitrogen. The MgO was dissolved using a 1 mol/L hydrochloric acid aqueous solution after carbonization and the porous carbons formed were isolated. The results indicated that most of the pores in the carbons were mesopores, which were generated as a result of the templating action of MgO formed by pyrolysis of the MgO precursors. The BET surface area of the carbons could reach up to 1 295 m^2/g although no activation was performed. The carbon yield was as high as 50% mass fraction when magnesium citrate was used as the MgO precursor.

关 键 词：沥青 MGO 模板炭化法 中孔炭 

分 类 号：TQ127.11[化学工程—无机化工]