WANG Dong-dong;XIE Hao;PIAO Gui-lin;ZHANG Ju-bing;CHEN Li-fang(School of Energy and Mechanical Engineering;

• 1:Nanjing Normal University
• 2:Nanjing 210042
• 3:China)

Abstract：

Using 96 percent Ni-based catalyst,prepared carbon nanotubes(CNTs) by simulating biogas catalytic decomposition.The effects of gas component,temperature and CO2 concentration on catalytic decomposition were investigated in moving-bed.The results show that,carbon deposition rate of catalyst with CH4/CO2 is much lower than that of CH4/N2 from 500 ℃ to 680 ℃ because of carbon elimination activity from CO2,the influence is eliminated when reaction temperature is between 680 ℃ and 900 ℃.With the increase of CO2 concentration,carbon deposition rate decrease gradually.For simulated biogas(60 percent CH4,40 percent CO2),the most suitable decomposition temperature is 650 ℃,carbon deposition rate reaches 215.2 percent.The samples are characterized by SEM and TEM,the carbon nanotubes gained by CH4/CO2 and CH4/N2 are essentially similar.It is beneficial for improving the service life of catalyst,producing higher purity carbon nano material under low temperature condition.

Key Words： simulated methane;Ni-based catalyst;carbon nanotubes;catalytic cracking

Abstract:

Keywords:

Foundation: 江苏省自然科学基金资助项目(BK2012851)

Author: WANG Dong-dong;XIE Hao;PIAO Gui-lin;ZHANG Ju-bing;CHEN Li-fang(School of Energy and Mechanical Engineering;

DOI: 10.13226/j.issn.1006-6772.2013.02.005

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