活性碳纤维的碳化—活化机理  

CARBONIZING ACTIVATING MECHANISM FOR ACTIVATED CARBON FIBER

作　　者：岳中仁[1] 陆耘[1] 曾汉民[1] 

机构地区：[1]中山大学材料科学研究所

出　　处：《合成纤维工业》1995年第4期31-36,共6页China Synthetic Fiber Industry

基　　金：国家自然科学基金;国家教委博士点基金;广东省自然科学基金

摘　　要：通过用ＮａＯＨ预处理剑麻纤维，再浸泡ＺｎＣｌ＿２溶液，然后在Ｎ＿２保护下热处理，制备出较高纤维得率和Ａｇ￣＋还原吸附能力的活性碳纤维（ＺＣＳＡＣＦ）。借助于ＩＲ，ＴＧ，ＷＡＸＤ，元素分析和比表面积测定，研究了纤维的碳化—活化机理。实验结果表明：纤维在低温区脱水的同时形成醛、酮基团和Ｃ＝Ｃ结构。当温度升到２５０℃以上时，纤维表面开始形成大量的微孔。提高ＺｎＣｌ＿２溶液的浸泡浓度可显著增加ＺＣＳＡＣＦ的表面积。当温度升至５５０℃时，纤维开始芳构化。Activated carbon fiber ZCSACF with higher reductive absorption of Ag￣+ were prepared in high yields by heat-ing sisal fibers pretreated with NaOH and immersed in ZnCl_2 solution in a flow of N_2. The carbonizing-activat-ing process of the fiber in this case was studied by means of IR,TG,WAXD,elemental analysis and specificsurface area determination.The results showed that the fiber eliminated H_O and formed aldehyde,ketonegroups and C=C bond.A great deal of micropores were formed in the fiber when heated to higher tempera-ture than 250℃. The specific surface area can be increased significantly by increasing the immersing concen-tration of ZnCl_2 solution,When the temperature raised to 550℃,the aromatization of fiber began to takeplace.

关 键 词：活性碳纤维 碳化-活化机理 剑麻纤维 碳纤维 

分 类 号：TQ342.742[化学工程—化纤工业]