两种铵盐催化剂和不同活化工艺对粘胶基活性碳纤维的影响  

The Effects of Two Sorts of Catalysts and Two Processes on Rayon-Based Activated Carbon Fiber

作　　者：曾凡龙[1] 潘鼎[1] 

机构地区：[1]东华大学材料学院碳纤维研究室/纤维改性国家重点实验室,上海200051

出　　处：《合成纤维》2004年第2期11-14,32,共5页Synthetic Fiber in China

基　　金：上海市重大科研项目;项目编号02DZ11014

摘　　要：研究了磷酸二氢铵和硫酸铵两种催化剂,以及逐步碳化活化和直接活化两种工艺对粘胶活性碳纤维得率、比表面积和孔结构等的影响;新指标有效得率能满意地克服单一指标的不足。粘胶纤维的氧化、碳化及活化得率随磷酸二氢铵的用量线性增加,随硫酸铵的用量增幅趋缓。磷酸二氢铵优于硫酸铵,用前者时纤维容易活化、比表面积大、有效得率高。纤维的有效得率与催化剂种类有关,随磷酸二氢铵的增加而上升;但与活化工艺的关系不大。经N2等温吸附和WAXD测试表明,两种工艺制得的产品有相同的孔结构,但微晶结构不同。Catalysts ammonium dihydric phosphate (ADP) and ammonium sulfate(AS) were used t o pre-treat rayon in the preparation of activated carbon fiber (ACF) by two processes radual and direct activations. A new idea Effective yield (EY) was very feasible. The results showed that ACF's yields were linear increment with ADP's contents, and only ascend slowly with AS's. ADP's catalysis was much better than AS's. ADP caused rayon to be activated easily with bigger s pecific surface areas and EYs. ACF's EYs were closely related with catalysts, being positive proportional with ADP's contents and steady with AS's; but hardly related with the processes. N2 isotherms and WAXD gave that the products of gradual and direct ac tivations had the same pore structures but different micro-crystalline structures.

关 键 词：铵盐催化剂 活化工艺 粘胶基 活性碳纤维 粘胶 孔结构 微晶结构 有效得率 

分 类 号：TQ342.7[化学工程—化纤工业]