以Co-Mo/MgO为催化剂制备小管径碳纳米管  

Preparation of Carbon Nanotube with Small Diameters Using Co-Mo/MgO as Catalyst

作　　者：江奇[1] 邹永良[1] 赵勇[1] 

机构地区：[1]西南交通大学超导研究开发中心,四川成都610031

出　　处：《西南交通大学学报》2008年第4期540-543,共4页Journal of Southwest Jiaotong University

基　　金：国家杰出青年基金项目(No.50588201);四川省科技攻关计划(05GG009-003;2006Z02-006-1);四川省应用基础研究基金(2008JY0061);西南交通大学基础科学研究基金的资助(2007B20)

摘　　要：用柠檬酸络合法制备催化剂Co-Mo/MgO,以CH4为碳源,采用催化化学气相淀积法制备小管径碳纳米管.通过调整反应气氛和温度,优化反应条件.所得碳纳米管形貌分别用透射电子显微镜和高分辨透射电子显微镜表征.研究结果表明,当反应温度为950℃,H2,N2和CH4的流量分别为200,200和50 mL/min时,可以获得管径约为10 nm的小管径碳纳米管,产率达110%以上.Carbon nanotubes （CNTs） with small diameters were prepared by catalytic chemical vapor deposition using Co-Mo/MgO as the catalyst and CH4 as the carbon source. The catalyst was prepared by citric acid complexation. The reaction atmosphere and temperature were studied deliberately to optimize the procedure. The morphologies of the obtained CNTs were characterized by transmission electron microscopy and high-resolution transmission electron microscopy. The CNTs with diameters about 10 nm were obtained with a yield over 110% when the reaction temperature was 950 ℃, the gas flow rates of H2, N2 and CH4 were 200, 200 and 50 mL/min, respectively.

关 键 词：碳纳米管 催化剂 Co—Mo 产率 优化 

分 类 号：O643[理学—物理化学]