Ni-CeO2/SBA-15 Catalyst Prepared by Glycine-Assisted Impregnation Method for Low-Temperature Dry Reforming of Methane

Developing low-temperature nickel-based catalysts with good resistance to coking and sintering for dry reforming of methane (DRM) is great significance. In this work, Ni (5 wt%) CeO2 were supported on SBA-15 porous material by glycine-assisted impregnation method obtain Ni-CeO2/SBA-15-G catalyst. XRD TEM results showed that the addition glycine can effectively promote dispersion NiO in pores SBA-15. H2-TPR XPS confirmed formation stronger metal-support interaction. addition, after glycine, NixCe1−xOy solid solution content was increased significantly, meanwhile, Ce3+ concentration from 31% 49%, accompanied more oxygen vacancies generation active species. For above reasons, had better catalytic performance DRM test (20 h, 600 °C) high GHSV (600,000 mL/gcat/h), its CH4 conversion reaction 20 h 2 times Ni-CeO2/SBA-15-C catalyst prepared a conventional method. TGA-DTA also proved almost completely eliminated carbon deposition. The advantages may have originated complexation metal cations prevent them gathering.