标题：CO2reforming with methane over small-sized Ni@SiO2catalysts with unique features of sintering-free and low carbon
作者：Wang, Fagen ;Han, Bolin ;Zhang, Linjia ;Xu, Leilei ;Yu, Hao ;Shi, Weidong
作者机构：[Wang, Fagen ;Han, Bolin ;Zhang, Linjia ;Shi, Weidong ] Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Enginee 更多
来源：Applied Catalysis B: Environmental
摘要：Sintering-free and carbon-free Ni catalysts developments are hot topics for high temperature hydrocarbons catalytic reactions. Core-shell is a promising structure to limit sintering, but ineffective towards carbon deposition if big sized Ni nanoparticles are present. In this work, core-shell structured Ni@SiO2catalysts with small-sized Ni nanoparticles (about 5 nm) were synthesized by microemulsion method, which are featured by both sintering-free and low carbon deposits for high temperature CO2reforming with methane reaction. The advantages were originated from the silica shell overlay confined moving space of Ni nanoparticles and the small size of Ni nanoparticles guaranteed low carbon diffusion in Ni crystals. The work provides a simple approach to synthesize small-sized Ni nanoparticles in core-shell catalysts for stable performance of CO2reforming with methane reaction. It is supposed that this type of catalyst could also be applied in many other hydrocarbon catalytic reactions involving sintering and carbon problems.
© 2018 Elsevier B.V.