With the objective of maximizing hydrogen and CNTs production, the catalytic cracking of naphtha has been carried out at progressive reaction temperatures i.e. from 600 to 750 °C. The ZSM-5 and nickel impregnated ZSM-5 were used as catalysts for cracking purpose in fluidization mode. The catalyst analysis imparted that impregnation of metallic nickel induces a strong adhesion on MFI structure of ZSM-5 associated with an enhancement in textural properties and acid density. In addition, the results disclose that the incorporation of nickel on ZSM-5 leads to increment in stability of catalyst which in turn pushes the yields of H₂, CNTs and conversion to greater values of 3.29%, 4.84% and 90%, respectively. The as-grown carbon structures over the catalyst surface were found to be multiwall carbon nanotubes confirmed by Raman spectra and TGA analysis where they exhibited high quality (I_D/I_G = 0.65) and purity, respectively, at 750 °C.

为了最大化氢气和CNT的生产，石脑油的催化裂化已在渐进的反应温度（即600至750°C）下进行。ZSM-5和镍浸渍的ZSM-5在流化模式下用作裂解目的的催化剂。催化剂分析表明，金属镍的浸渍在ZSM-5的MFI结构上引起了强烈的附着力，这与质地性能和酸密度的提高有关。另外，结果公开了在ZSM-5上引入镍导致催化剂稳定性的增加，这反过来又推动了H ₂的产率。，CNT和转化为更高的值，分别为3.29％，4.84％和90％。发现在催化剂表面上生长的碳结构是通过拉曼光谱和TGA分析证实的多壁碳纳米管，它们 在750℃下分别表现出高质量（_ID / _IG = 0.65）和纯度。