“…Moreover, it has been shown that the two factors of metal dispersion and its interaction with the support material play major role in catalytic performance of FTS. Recently, some new supports have been used in the numerous studies such as carbon nanotubes (CNTs), γ -Al 2 O 3 nanofibers, carbon sphere, zeolites (e.g., ZSM-5), graphene and the ordered mesoporous SiO 2 (e.g., [3,[22][23][24][25][26][27][28][29] . Using CNT as the support in Co-based catalysts leads to decreasing the reduction temperature of the catalysts during the pretreatment stage [3,8,15] .…”