Design, fabrication, and identification of lacunary phosphomolybdate and nanostructured catalysts based on mesoporous TiO2 were surveyed. The applications of these compounds in performing oxidative desulfurization reactions have also been investigated. Various techniques such as modification with gold and carbon nanoparticles as well as stabilization on the carbon substrate of graphitic carbon nitride have been utilized to activate mesoporous TiO2 in the visible region. Also, the lacunary phosphomolybdate on this substrate has been stabilized, and its effectiveness has been eva‎luated as a new catalyst. The remaining sulfur content in the fuel phase was determined using UV-vis methods and standard curves, and X-ray fluorescence energy scattering (EDXRF). FT-IR, Raman, EDS, XRD, SEM, TEM and nitrogen adsorption-desorption methods were used to determine the characteristics of the prepared compounds. Optimization of the main parameters affecting ODS reaction progress has been done. Based on obtained results, lacunary phosphomolybdate and photocatalyst of carbon-doped mesoporous TiO2 and supported TiO2 modified with gold nanoparticles o graphitic carbon nitride with 98.6%, 95.4% and 97.3%, respectively indicates the removal of very suitable performance of dibenzothiophene removal in mild reaction conditions. Capabilities such as reusability, desulfurization of model fuels containing high sulfur content, and removal of sulfur compounds from real fuels have also been investigated and approved.

عليرضا نجفي

محمد محسن مومني

مهران غياثي، عباس رحمتي، محمد ديناري