(634e) Ptmgfe/Ni-Based Al2O3-CeO2 Catalysts for Dry-Reforming of Methane

Authors: 
Jawad, A., Missouri Science and Technology
Rownaghi, A., University of Missouri S&T
Rezaei, F., Missouri University of Science and Technology

The dry reforming of methane (DRM) converts two major greenhouse gases into a synthesis gas with H2:CO ratio of close to 1 and, thus, can be used readily for Fischer-Tropsch and carbonylation reactions.[1][2] In recent years, CO2 reforming of methane (dry reforming of methane, DRM) has become an attractive research area because it converts two major greenhouse gasses into syngas (CO and H2), which can be directly used as fuel or feedstock for the chemical industry.[3] The promotional effect of Fe, Mg, Mo, and Pt on Ni-based catalyst supported on Al2O3-CeO2 (Ni/Al2O3-CeO2) have been investigated in dry reforming of methane (DRM) reaction. To elucidate the influence of metal promoters on the Ni/Al2O3-CeO2 materials, the catalytic reaction was conducted in a continuous fixed-bed flow reactor at various reaction temperatures (550-700 °C), space velocity of 12,000 ml𝑔𝑐𝑎𝑡−1 h-1 and different feedstokcs (pure CH4 or 50% CH4 and CO2 mixture) under atmospheric pressure for 10 h time on stream. The combination of material characterization and catalytic test reveals that Fe, Mg, and Mo-doped Ni/Al2O3-CeO2 are excellent catalyst for this process helping to achieve high degrees of CO2 conversions. The co-doped Ni/Al2O3-CeO2 catalysts with Mg and Fe significantly enhanced the activity, selectivity and stability of the obtained Mg-Fe/Ni/Al2O3-CeO2 composite catalyst. Further, addition of 0.05wt% Pt to the Mg-Fe/Ni/Al2O3-CeO2 composite catalyst leads to an excellent catalytic activity/stability at 700 oC during the dry reforming reaction

References

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[2] M. Ocsachoque, F. Pompeo, and G. Gonzalez, “Rh-Ni/CeO2-Al2O3 catalysts for methane dry reforming,” Catal. Today, vol. 172, no. 1, pp. 226–231, 2011.

[3] Z. BIAN, S. Das, M. H. Wai, P. Hongmanorom, and S. Kawi, “A review on bimetallic Ni-Based catalysts for CO2 reforming of methane,” ChemPhysChem, vol. 18, pp. 3117–3134, 2017.