Co-production of hydrogen and carbon nanofibers from catalytic decomposition of methane over LaNi(1−x)Mx O3−α perovskite (where M = Co, Fe and X = 0, 0.2, 0.5, 0.8, 1)

摘要: Abstract In this work, LaNi (1−x) M x O 3−α (where M = Co, Fe and X = 0, 0.2, 0.5, 0.8, 1) perovskite have been successfully used as catalyst precursors for catalytic decomposition of methane (CDM). 0.8 0.2 Co exhibited better performance in terms hydrogen carbon nanofibers yields during CDM reaction compared to LaNiO 3 perovskite, which can be attributed the formation smaller more uniform particles. Moreover, reduced also produces filamentous carbons with “chain–like structure” is different from “tube–like produced perovskite. This due growth mechanisms those over catalysts. More particularly, chain–like structure were through “pulse–growth mechanism” whereas tube–like “smooth–growth