Production of syngas via glycerol dry reforming on Ni catalysts supported on mesoporous nanocrystalline Al2O3

Abstract

Mesoporous Ni/γ- Al2O3 catalysts with various Ni contents were synthesized and employed in glycerol dry (CO2) reforming (GDR) reaction. The results revealed that increasing the Ni content from 5 to 20 wt.%, decreased the BET areas of the samples from 180 to 143 m2/g and increased the Ni crystalline size from 6.6 to 19 nm. Moreover, the catalytic activities of different catalysts were studied and the results revealed that 15 wt.% Ni/Al2O3 possessed the maximum catalytic activity. Finally, the stability of the catalyst with maximum activity was investigated for 20 h of reaction at 700 °C. The results showed a significant decline in catalytic activity during the first 5 h of reaction followed with a stable activity for 15 h time on stream.