Role of Surface Acidity in Formation and Performance of Active Ni Single Sites in Supported Catalysts for Butene Dimerization: A View inside by Operando EPR and In Situ FTIR Spectroscopy

A series of supported Ni/SiO2–Al2O3 catalysts with the same Ni content but different ratios of Bronsted and Lewis acid sites resulting from different Al/Si ratios have been prepared by impregnation...