Highly Efficient Catalytic Oxidative Desulfurization of Gasoline Using PMnW11@PANI@CS as a New Inorganic–Organic Hybrid Nanocatalyst

In this manuscript, to obtain a high-purity fuel, a new inorganic–organic hybrid (IOH) nanocomposite (PMnW 11 @PANI@CS) based on mono- supplanted heteropolyanion (PMnW 11 ), polyaniline (PANI), and chitosan (CS) was synthesized successfully. The synthesized nanocomposite (PMnW 11 @PANI@CS) was employed as a nanocatalyst in the nanocatalytic oxidative desulfurization (NODS) process. PMnW 11 @PANI@CS was confirmed by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), UV–vis, Fourier transform infrared spectroscopy (FT-IR), and energy-dispersive X-ray spectroscopy (EDX) analysis. The elimination of hazardous molecules containing sulfur from real and simulated gasoline was done according to the NODS process. The sulfur compounds in gasoline were oxidized and disengaged effectively under a mild reaction. PMnW 11 @PANI@CS with nanocatalytic activity was used as a recyclable nanocatalyst in this process. PMnW 11 @PANI@CS was evaluated in the NODS process using a combination of CH 3 COOH and H 2 O 2 in a 1:2 volume ratio as an oxidant system. The results were compared with the obtained results of a simulated gasoline oxidation process under the same conditions. Furthermore, the effect of the nanocatalyst, types of oxidation system, dosage of the nanocatalyst, temperature, and reaction time on the NODS efficiency were investigated. Experimental results show that owing to the excellent efficiency of the PMnW 11 @PANI@CS NODS system, it can be a promising method to attain super clean gasoline.