نوع مقاله : مقاله علمی پژوهشی
نویسندگان
1 سمنان، دانشگاه سمنان، دانشکده شیمی
2 سمنان، دانشکده شیمی، دانشگاه سمنان
3 سمنان، دانشگاه سمنان، دانشکده علوم و فناوری های نوین، گروه نانو فناوری
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, a Mn₂V₂O7/Fe₀.₁₁V₂O₅.₁₆/zeolite nanocomposite was successfully synthesized via a hydrothermal method. The zeolite support was surface-modified with cetyltrimethylammonium bromide (CTAB) as cationic surfactant to enhance its adsorption properties and dispersion behavior. This composite was synthesized with a 1:1 ratio catalyst (MnFe2O7/Fe₀.₁₁V₂O₅.₁₆) based on modified zeolite. The final nanocomposite was characterized using FTIR, XRD, and SEM analyses, which confirmed the successful formation of a well-integrated and uniformly distributed Mn₂V₂O7 and Fe₀.₁₁V₂O₅.₁₆ phases on the modified zeolite surface. The synthesized nanocomposite was then applied as a catalyst for the oxidative desulfurization of benzothiophene in model fuel, achieving a sulfur removal efficiency of 53% under optimized conditions. To evaluate the reaction mechanism, kinetic studies were performed by fitting the experimental data to zero-, first-, and second-order models. The results indicated that the desulfurization reaction followed a first-order kinetic model with an excellent correlation coefficient (R² = 0.9385), suggesting that the reaction rate is directly proportional to the benzothiophene concentration. These findings demonstrate that the CTAB-modified Mn₂V₂O7/Fe₀.₁₁V₂O₅.₁₆/zeolite nanocomposite is a promising material for effective fuel desulfurization.
کلیدواژهها [English]
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