Reforming of CH4 with CO2 over Co/Mγ-Al oxide catalyst

A series of Co/Mγ-Al oxide samples, CoMgAl-x(x=(Mg+Co)/Al molar ratio of 1-5), were prepared by the self-combustion method followed by H2 reduction. The catalytic performance and stability of the samples were studied in dry reforming of CH4. XRD and H2-TPR characterization results showed that the reduced CoMgAl-x samples mainly consisted of solid solution and spinel phases with cobalt particles. The spinel phases contained Co3O4 and ConMg1-nAl2O4(0≤n≤1) varying with the(Mg+Co)/Al ratio. The effect of(Mg+Co)/Al molar ratio on the catalytic behavior was investigated in detail and CoMgAl-3 exhibited the highest catalytic activity and stability among the catalysts studied.