Boosting CO hydrogenation to methane over Ni-based ETS-10 zeolite catalyst.

The activation and conversion of the CO molecule have always been the most vexing challenge due to its chemical inertness. Developing highly active catalysts, which could overcome dynamic limitations, has emerged as a provable and effective method to promote CO activation-conversion. Herein, ETS-10 zeolite-based catalysts, with active nickel species introduced by doping and impregnation, have been employed for CO methanation. Conspicuous CO conversion (39.7%) and perfect CH selectivity (100%) were achieved over the Ni-doped ETS-10 zeolite catalyst at 280°C. Comprehensive analysis, which include X-ray diffraction, N adsorption-desorption, SEM, TEM, H chemisorption, CO temperature programmed desorption, and X-ray photoelectron spectroscopy, was performed. Also, the results indicated that the resultant hierarchical structure, high metal dispersion, and excellent CO adsorption-activation capacity of the Ni-doped ETS-10 zeolite catalyst played a dominant role in promoting CO conversion and product selectivity.