Effects of Reaction Temperature on CO_2 Reforming of CH_4 over Multi-walled Carbon Nanotubes Catalyst with Co-Mo-MgO Nanoparticles

摘要

The utilization of greenhouse gases, such as carbon dioxide (CO_2) and methane (CH_4), is among the most important challenges in the energy research field. The catalytic activity behavior of CO_2 reforming of CH_4 (CRM) over synthesized multi-walled carbon nanotubes (MWCNTs) with Co-Mo and MgO nanoparticles was investigated. Based on conversion of reactants and production of syngas, the synthesized Co-Mo-MgO/MWCNTs were found to be a suitable catalyst for the CRM reaction. The CH_4 and CO_2 conversions were greatly influenced by the reaction temperature in the range of 750-1000 °C. The catalyst exhibited high activity and stability during 10 h reaction time with 82.68% conversion of CH_4 at 950 °C respectively, without significant deactivation. The reaction rate of CH_4 and CO_2 over carbon nanotubes was affected significantly by the reaction temperature. The syngas ratio was close to unity and no carbon deposition over the catalyst was observed after the termination of the reaction.