Nickel-Manganese Bimetallic Catalysts for Selective Hydrogenation of CO_x in the Presence of Light Hydrocarbons: Promotional Effect of Manganese

摘要

The worldwide demand for development of new energy storage and resources has reanimated research into carbon oxide hydrogenation reactions. Carbon oxide methanation reaction is a well-known process that has been used for various applications, such as purification of hydrogen used in ammonia synthesis and fuel cells, synthetic natural gas production, and chemical storage of electricity1. On the other hand, in the catalytic synthesis of hydrocarbons from oxidative processes, significant quantities of CO and CO2 usually present as undesirable by-products which hinders commercialization for example in the production of C2 feedstock for the polymer industry Therefore, effectively removing CO and CO2 from a synthesized hydrocarbon stream via hydrogenation reaction, while maintaining or increasing the concentration of C_(2+) hydrocarbons is highly desirable for the industrial processes. In this paper, we report on the influence of Ni-Mn/Al2O3 catalyst structure and transition metal content on the C_(2+) yield in the hydrogenation of carbon oxides in the presence of hydrocarbons (CH4, C2H4, C2H6, C3H6, and C3H8).