The kinetics of the catalytic oxidation of magnesium sulfite

Alex00116 Jan, 2023Science

Catalysts prepared with different concentrations of Co(NO3)2 were characterized by Brunauer-Emmett-Teller analysis, transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The kinetics of the catalytic oxidation of magnesium sulfite were studied in a bubbler tank, showing that the general reaction orders for carbon nanotubes, oxygen and magnesium sulfite were 0.22, 0.45 and 0.01, respectively. The apparent activation energy is 23.43 kJ mol?1. The three-phase reaction model suggests that the internal diffusion of oxygen may be the rate-determining step in the oxidation of magnesium sulfite. The research results can provide a reference for the design of multi-walled carbon nanotube catalysts for the oxidation of sulfite.