| 초록 |
The combined steam and CO2 reforming with CH4 (CSCR) reaction has been getting attractive to produce clean hydrogen fuel as well as to reduce the emission of greenhouse gases. In general, the CSCR reaction can produce a proper H2/CO ratio of ~2 for successive chemical synthesis by COx hydrogenation with relatively higher stability and less coke depositions compared to that of dry reforming of methane (DRM). However, the typical Ni-based reforming catalysts can be largely suffered by thermal aggregations of Ni nanoparticles, which causes a steady decrease of catalytic activity. To overcome those shortcomings, the ordered mesoporous Al2O3 structures was previously synthesized to prepare the spatially confined Ni nanoparticles, which was further modified with an optimal amount of Al2O3 overlayer, which showed an excellent long-term stability due to the newly formed strong interactions as well as less aggregations of Ni nanoparticles. |
