Mg-Ag/SiO2 Catalyst for the Synthesis of Methoxyacetone

Structural characterization revealed that the introduction of Mg effectively inhibited the sintering of Ag nanoparticles, enhanced Ag dispersion, and introduced more weak acid sites to regulate the adsorption and transformation pathways of reactants. Compared to monometallic Ag/SiO2, the Mg-Ag/SiO2 catalyst possessed a higher specific surface area (296 m2·g−1) and superior pore structure, promoting mass transfer and diffusion.

This study demonstrates that introducing the second component Mg to regulate the dispersion state, valence ratio, and surface acidity of Ag species can synergistically optimize the catalyst's activation of reactants and desorption of products, thereby significantly enhancing the activity, selectivity, and long-term stability of the ODH of MOP to MOA. It provides a new strategy for designing efficient and stable catalysts for alcohol oxidative dehydrogenation and holds practical application value for the green synthesis of pesticide intermediates (MOA).