The catalytic activity was stable after 36 hours on stream, and the presence of Fe in the catalyst promoted the growth of CNF.

• 结果表明 ；镍铁系列催化剂具有较好的催化活性 ；在反应36h内没有失活 ；催化剂中Fe的存在有利于提高纳米碳纤维的产率 .