LAUSR

Abstract Carbon-Ni/MgO-Al 2 O 3 composite catalysts were prepared using sucrose as carbon precursor and [Ni,Mg,Al]-layered double hydroxide (LDH) as Ni-based catalyst precursor by impregnation method, characterized and used for CO 2 reforming of CH 4 . The results showed that pretreated temperature of LDH, carbonization temperature of composite catalyst precursors and the sucrose/layered double oxide (LDO) mass ratio have obvious effect on the structure and catalytic performances of the resultant composite catalysts. The incorporation of carbon into Ni-based catalyst results in the increase of specific surface area, anti-coke ability, inhibition of Ni particle growth and catalytic stability, but a little decrease in initial activities of catalysts owing to low catalytic activity of the carbon. At an appropriate condition with LDH pretreated temperature of 350 °C, carbonization temperature of 800 °C and sucrose/LDO ratio of 1.2, the resultant composite catalyst exhibits the best activity and stability.