Syngas Production via CO2 Reforming of Methane over Sm2O3−La2O3-Supported Ni Catalyst

CO 2 reforming of methane into syngas over Sm 2 O 3 −La 2 O 3 (SL)-supported Ni catalyst was investigated in a fixed-bed quartz reactor and the best catalytic activity was observed over Ni/SL (sol−gel) due to the reduction of the perovskite LaNiO 3 and spinel La 2 NiO 4 to form small nickel particles. The conversion of CH 4 and CO 2 over Ni/SL(sol−gel) were 55% and 57%, respectively, the selectivity of H 2 and CO were 96% and 98%, significantly higher than those over Ni/SL (imp) catalyst at 700 °C and a GHSV of 4.8 × 10 4 mL·h −1 ·g −1 cat . In the meantime, the Sm 2 O 3 −La 2 O 3 -supported Ni catalysts were characterized by means of techniques, such as BET, XRD, H 2 -TPR, TG/DTA, HRTEM, XPS, and XAES.