Production of syngas by combination of CO2 reforming and partial oxidation of CH4 over Ni/Al2O3 catalysts in fixed-bed reactor

Ni/Al2O3 catalysts were synthesized by sol-gel method with various nickel loadings. Chemical and physical properties of the catalysts were characterizedby XRD and TPR techniques. X-ray diffraction patterns showed no peaks due to NiO species. The results indicated that these parameters are greatlydependent on the amount of nickel loading. The results also revealed that the catalyst with 20 percent nickel loading had the highest activity for syngas production after 270 min reaction on stream. The SEM images of spent catalysts showed the formation of filamentous carbon on the 20Ni/Al and 30Ni/Al catalysts.

Keywords:

Ni , Al2O3 catalysts , Sol-gel , Fixed bed reactor