Catalytic production of carbon nanotubes over Fe–Ni bimetallic catalysts supported on MgO

The Effect of Metal Loading on the Performance of Tri-metallic Supported Catalyst for Carbon Nanotubes Synthesis from Liquefied Petroleum Gas

“…The characteristic features of a highly oriented pyrolytic graphite (HOPG) were detected at 2 theta ≈ 25.74 o . A similar finding was also reported previously (Tsoufis et al, 2007;Hsieh et al, 2009;Maccallini et al, 2010).…”

“…An advantage of using MgO as a catalyst support is that it increases the CNT yield and it can be separated easily from the CNT product (Tsoufis et al,Setyopratomo et al 121 2007) by a simple acid treatment, thereby facilitating the purification of CNT (Ago et al, 2006). A significant factor for controlling catalyst performance is the level of metal loading (Tsoufis et al, 2007). The size of metal nanoparticles dispersed on a catalyst support is affected by the level of metal loading, as a lower metal loading results in a smaller size of the metal nanoparticles.…”

Optimization of Synthesis Condition for Carbon Nanotubes by Catalytic Chemical Vapor Deposition (CCVD)

“…The use of ethanol as the carbon source in the CVD method exhibits positive effect, like the lower reaction temperature, the high purity of the products, and the possibility of large-scale production at lower costs [5]. The catalysts are generally supported on Porous inorganic materials, such as Al 2 O 3 [13,14], SiO 2 [15,16], and MgO [17] and consist of Fe, Co, Ni, Mo or mixtures of those metals. Among these support materials much attention has been paid on MgO because it can be easily removed by acid treatment [18].…”

Synthesis of Carbon Nanomaterials in a Swirled Floating Catalytic Chemical Vapour Deposition Reactor for Continuous and Large Scale Production

“…Catalyst supports also play an important role. For example, in order to facilitate the large scale production of CNTs, support material should have a threefold action: minimises the formation of by-products (amorphous carbon, graphite nanospheres, etc), deters the aggregation of catalytic centres, and allows its removal from the resulting CNTs using simple chemical procedures (Tsoufis et al, 2007).…”