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Citation: WANG Wenhua, WANG Heyi, YANG Yong, JIANG Shubin. The Methane Catalytic Decomposition over Ni/Al₂O₃[J]. Chinese Journal of Applied Chemistry, ;2012, 29(5): 537-544. doi: 10.3724/SP.J.1095.2012.00286 shu

The Methane Catalytic Decomposition over Ni/Al₂O₃

1.
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China

Corresponding author: WANG Heyi,
Received Date: 30 June 2011
Available Online: 28 September 2011
Fund Project: 中国工程物理研究院科学技术发展基金(2007A02003)资助项目 (2007A02003)

Ni/Al₂O₃ catalysts have been prepared through either impregnation or coprecipitation methods.The effects of Ni loading,preparation method and reaction temperature on the methane catalytic decomposition have been investigated.The results indicated that 20%(mass fraction) Ni/Al₂O₃ of which the average particle size of Ni was about 11.25 nm showed the best catalytic performance among the impregnated catalysts.The yields of carbon for per gram Ni and hydrogen for per mole Ni on such catalyst were 15.30 g and 164 mol,respectively.On the coprecipitated Ni/Al₂O₃,both the catalytic activity and lifespan of catalyst were improved.The deposited filamentous carbon over coprecipitated Ni/Al₂O₃ was much longer and more homogeneous than that generated over impregnated Ni/Al₂O₃.The methane catalytic conversion on coprecipitated Ni/Al₂O₃(41.2% mass fraction)remained higher than 30% after running the reaction at 550℃ up to 350 min.
- Ni/Al₂O₃,
- methane catalytic decomposition,
- hydrogen,
- carbon filaments
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沈阳化工大学材料科学与工程学院沈阳 110142

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The Methane Catalytic Decomposition over Ni/Al₂O₃