Hydrogen and syn gas production via CO2 dry reforming of methane over Mg/La promoted Co-Ni/MSU-S catalyst

A series of xMg/La yCozNi/MSU-S catalysts were prepared by a sol-gel method and characterized by means of N2-physisorption, FT-IR, H2-TPR, CO2-TPD, H2-TPD, XRD, HRTEM, TG/DSC and O2-TPO techniques. The catalytic performance of the catalysts was evaluated for H2 and syn gas production at different temperatures at atmospheric pressure. The effect of reaction temperature, catalyst composition and performance of the catalyst were investigated during CO2 dry reforming reaction at 700-800 °C with GHSV of 2.4 × 104 mL/g−1 h−1. The results indicated that upon La, Mg and Co promotion, the Ni nanoparticles are highly dispersed on the mesoporous walls of MSU-S via strong interaction between metal ions and the HO-Si-groups of MSU-S. The presence of La2O3 in xLayCozNi/MSU-S results in enhancement of initial catalytic activity as compared to xMgyCozNi/MSU-S. It revealed that 3 La 2Co 7Ni/MSU-S performed the best with highest CH4 and CO2 conversion showing outstanding catalytic activity, greater stability and low coking for 50 h during 75 h time on stream at 750 °C.