Climate change is a significant worry for the world due to carbon dioxide (CO₂) emissions from the excessive usage of fossil fuels. One of the most prestigious processes for converting CO₂ into value-added goods, including synthetic natural gas, is the CO₂ methanation process. However, developing an effective catalytic system remains a significant challenge. The present research focuses on thermodynamics and catalytic insights over a highly efficient Ni/SiO₂-MgO nanocomposite catalyst for effective CO₂ methanation using Ni/SiO₂-MgO nanocomposite catalyst for synthetic natural gas production. Ni/SiO₂-MgO nanocomposite catalyst was synthesized using the impregnation method. Different techniques such as XRD, TEM, SEM, N₂ adsorption analysis, and FTIR spectroscopy were used to characterize the synthesized catalysts. The CO₂ methanation reaction was performed, and it was found that the 5%Ni/SiO₂-MgO nanocomposite catalyst with a 1:1 ratio of SiO₂-MgO exhibited higher CH₄ selectivity (83%) and CO₂ conversion (90%) due to the synergistic effect of uniformed distributed Ni active phase on MgO and SiO₂. In addition, the synthesized 5%Ni/SiO₂-MgO nanocomposite catalyst exhibited high thermal stability and significantly suppressed coke deposition. This research offers a fundamental understanding of CO₂ methanation over Ni/SiO₂-MgO nanocomposite catalysts, which could be used to produce methane on a commercial scale

Ijaz Hussain

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