Synthesis of carbon nanof ibers by catalytic pyrolysis of ethylene and methane on hydrides of intermetallic compounds of lanthanum with nickel

摘要

Carbon nanofibers were synthesized by the pyrolysis of ethylene and methane on hydrides of intermetallides LaNi_nH_x (n = 2,3,5;x = 0.1-4).The influence of parameters of the synthesis (temperature and the ratio of gases in an Ar : H_2 : C_2H_4 (CH_4) mixture) on the structure of nanofibers thus formed was studied.Hydrides of nickel intermetallides are more efficient catalytic systems than metallic nickel.