Co-Mo/ZrO_2催化剂CVD法制备碳纳米管  

CVD synthesis of CNTs using bimetal catalyst with different atomic ratio supported on ZrO_2

作　　者：房永彬[1] 严新焕[1] 孙军庆[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032

出　　处：《浙江工业大学学报》2005年第1期88-92,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金(200021)

摘　　要：研究了以乙炔为碳源,用氮气做载气,以二氧化锆负载Co-Mo双组分金属为催化剂,在500℃～750℃常压下生长碳纳米管.并用TEM和XRD对各系列实验中生长出的碳纳米管进行了表征.实验表明使用二氧化锆做载体的Co-Mo双组分催化剂在实验条件下可以生长出石墨化程度较好的碳纳米管,金属组分的配比、生长温度及制备催化剂的pH值对其生长质量都有极大的影响.并得出制备该催化剂的较佳条件及由该催化剂制备碳纳米管时的升温速率,分别为:Co∶Mo=1∶1.06;pH=7～9;升温速率为80℃/min.Carbon nanotubes were produced by chemical catalytic vapor decomposition of acetylene in the presence of bimetal (Co and Mo) with different ratio supported on ZrO_2 as catalyst under normal pressure at the temperature of 500 ℃~750 ℃ and nitrogen as carrier gas. Carbon nanotubes produced in the experiment were characterized by transmission electron microscope (TEM) and XRD. The experiment demonstrated that bimetal catalyst supported on ZrO2 could synthesize good quality carbon nanotubes. The ratio of the two metals, the elevating rate of growth temperature of carbon nanotubes and pH value under which the catalysts were prepared are important factors. The optimized ratio of the two active metals supported on ZrO_2 and pH value determined by comparison of the results obtained from the experiment are: Co∶Mo=1∶1.06; pH=7~9; the elevating rate of the temperature is 80 ℃/min.

关 键 词：双组分 催化剂 CO-MO 二氧化锆 制备 ZRO2 并用 CVD法 碳纳米管 表征 

分 类 号：TQ153.2[化学工程—电化学工业] TQ174