Cu/La_2O_3催化裂解乙炔制备碳纳米纤维  

Preparation of Carbon Nanofibers by Catalytic Pyrolysis Ethine using Cu/La_2O_3 as the Catalyst

作　　者：熊亮[1,2] 李国强[1,2] 瞿美臻[1] 

机构地区：[1]中国科学院成都有机化学研究所,四川成都610041 [2]中国科学院研究生院,北京100039

出　　处：《合成化学》2009年第5期553-556,共4页Chinese Journal of Synthetic Chemistry

基　　金：国家科委技术部重大科学研究计划资助项目(2006CB932703);中国科学院知识创新工程重要方向资助项目(KJCX2-YW-M01)

摘　　要：用沉淀法制备了Cu/La2O3催化剂,将其用于催化裂解乙炔制备了碳纳米纤维(CNFs)。考察了反应温度和反应时间对CNFs产率的影响。用SEM和微机差热天平分别对CNFs的形貌和抗氧化性能进行了研究。实验结果表明:于650℃反应3 h,CNFs产率为1.4 g.(g Cat.)-1;CNFs形态规则,表面光滑,直径300 nm^700 nm,长度达几十微米;CNFs燃烧温度515℃~544℃。Cu/La2O3 catalyst was prepared by precipitation method. Carbon nanofibers（CNFs） were synthesized by catalytic pyrolysis acetylene using Cu/La2O3 as the catalyst. The effect of reaction temperature and time on yield of CNFs were investigated. The structure of CNFs were characterized by SEM and thermogravimetric analysis. The results showed that the yield of CNFs synthesized at 650 ℃ for 3 h was 1.4 g · （ g Cat. ）^ -1 The CNFs have smooth surface and regular morphology. The diameter of CNFs is distributed in the range of 300 nm to 700 nm, and the length can reach several decade microns. The combustion temperature of CNFs is between 515 ℃ and 544 ℃.

关 键 词：Cu/La2O3 催化剂 碳纳米纤维 催化裂解法 乙炔 

分 类 号：O643.36[理学—物理化学]