CARBON NANOTUBES VIA METHANE DECOMPOSITION ON AN ALUMINA SUPPORTED COBALT AEROGEL CATALYST

查看全文 作　　者：Lingyu Piao, Jiuling Chen and Yongdan Li* Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China

出　　处：《China Particuology》索引2003年第1卷第6期,共5页

基　　金：supports from a 973 Program of the Chinese Ministry of Science and Technology under contract number G199902240;National Natural Science Foundation of China under contract numbers 20006072,29792079-2 and 29876032 are gratefully acknowledged. 摘　　要：An alumina-supported cobalt aerogel catalyst prepared from a sol-gel and a supercritical drying method was used in the catalytic decomposition of methane. The physical-chemical properties of the catalyst were characterized and its activity for methane decomposition was investigated. The effects of calcination and reaction temperatures on the activity of the catalyst and the morphology of the carbon nanotubes produced were discussed. A CoAl2O4 spinel structure formed in the calcined catalyst. The quantity of the nanotubes produced in the reaction increases with the amount of cobalt in the reduced catalyst. A higher reaction temperature leads to a higher reaction rate, though faster deactivation of the catalyst occurs with the change. The carbon nanotubes grown on the catalyst have smooth walls and uniform di-ameter distribution. 关键词：碳纳米管溶胶凝胶体催化分解钴催化剂气凝胶

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CARBON NANOTUBES VIA METHANE DECOMPOSITION ON AN ALUMINA SUPPORTED COBALT AEROGEL CATALYST

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