Mesoporous SnO2–MoO3 catalyst for diesel oxidative desulfurization: Impact of the SnO2/MoO3 ratio on catalytic efficiency

Vehicular SOx emissions have a huge detrimental impact on public health, catalytic converters, and the environment. Developing strategies to remove sulfur from diesel thus safeguard above is imperative. A series of SnO2–MoO3 mixed oxides mono MoO3 SnO2 were prepared by soft template method, calcined at 450 °C successfully tested in model oxidative desulfurisation (ODS). The SnO2/MoO3 mole ratio (hereinafter denoted as Sn/Mo) efficiency was investigated, among other parameters. obtained samples analyzed using X-ray diffraction (XRD), Raman spectrocscopy, scanning electron microscopy (SEM), N2-physisorption titration method for acidic properties. study demonstrates that mixing improves sites, crystallinity, morphological properties pure SnO2. addition increased oxygen vacancies surface area High site densities 49.3, 47.4, 46.7 mEqg−1 observed catalysts with 2:1, 1:1, 1:2 Sn/Mo ratio, respectively. an increase Sn content highest 99.8% dibenzothiophene (DBT) oxidation achieved 30 min (2:1) catalyst compared 92 70% 1:1 catalysts, rate constant reaction 0.057 min−1, which eight times MoO3; 0.007 min−1 three SnO2; 0.017 min−1. ODS mechanism utilizing proposed. demonstrated high potential industrial application.