以ZSM-5分子筛为模板担载金属镍(Ni/ZSM-5)为催化剂，在不同质量分数Ni和温度下进行气相化学沉积过程得到氢气和纳米碳质材料(碳纳米管、纳米炭纤维)。氢气和纳米碳质材料的产率随Ni质量分数增加和反应温度升高而显著地增加，但当Ni含量为8%时产率却减小。纳米碳质材料的形貌与反应温度密切相关。在较高温度下可沉积出碳纳米管，在较低温度下则可得到纳米炭纤维。随着反应时间的延长Ni/ZSM-5的催化活性降低。
Methane decomposition into hydrogen and carbon nanomaterials ( CNMs) was carried out over Ni/ZSM-5 catalysts with different Ni contents at different temperatures. The yields of hydrogen and the CNMs increase significantly with Ni content and reac-tion temperature, but they level off at high temperatures when the Ni content is over 8 wt.%. The morphology of the CNMs strong-ly depended on the temperature. Multiwall carbon nanotubes were formed at higher temperature, while carbon nanofibers formed at the lower temperature. The catalytic activity of the Ni/ZSM-5 decreased with time.
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