Abstract
Dry reforming of glycerol is an interesting method for syngas production due to its H2/CO ≈ 1 that is suitable for FT synthesis. In this study, the performance of the Ni/MgO.Al2O3 catalysts with different nickel contents was investigated in glycerol dry reforming. The MgO.Al2O3 carrier was prepared by a simple sol-gel method and the nickel-based catalysts were synthesized by the wet impregnation method. The prepared catalysts possessed high BET surface area and pore volume. The TPR analysis showed a strong interaction between Ni and the catalyst support. The results demonstrated that the glycerol conversion decreased by increasing in CO2/glycerol (GRR) molar ratio. All the prepared samples showed high stability in glycerol dry reforming during 25 h of reaction, indicating the high resistance of the catalysts against carbon formation. Also, 10 wt%Ni/MgO.Al2O3 catalysts possessed the highest catalytic performance (52% of glycerol conversion at 750 °C) due to the high dispersion of nickel on the prepared carrier.
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