سنتز و شناسايي كمپلكس موليبدن تثبيت‌شده بر روي ليگنين مغناطيسي به عنوان كاتاليست ناهمگن و بررسي به كارگيري آن در واكنش اكسايش سولفيدها و الكل‌ها

Synthesis an‎d Characterization of a Heterogeneous Molybdenum complex as a Catalyst Stabilized on Magnetic Lignin an‎d application in the Oxidation of Sulfides an‎d Alcohols

شيمي معدني

In recent years, the development of recyclable an‎d high-performance heterogeneous catalysts, particularly those based on renewable resources, has become one of the main concerns of green chemistry. In this study, a novel catalytic system based on molybdenum (Mo) was designed an‎d immobilized onto magnetic lignin as a bio–inorganic support. Lignin, as an abundant an‎d inexpensive natural polymer with rich functional groups, provides a suitable platform for the stabilization of metal ions. By combining this support with Fe₃O₄ magnetic nanoparticles, a catalyst was obtained that can be easily separated from the reaction medium using an external magnetic field. After synthesis an‎d characterization of the catalyst by techniques such as VSM, FT-IR, SEM, XRD, an‎d TGA, its catalytic performance was investigated in two key reactions: Oxidation of sulfides an‎d Oxidation of alcohols The reaction conditions, including catalyst loading, type an‎d amount of oxidant, temperature, solvent, an‎d base, were optimized. The results demonstrated that the catalyst not only exhibits high catalytic activity an‎d reaction yields but also possesses excellent recyclability without significant loss of performance. This research represents an effective step toward the development of environmentally friendly catalysts by integrating the principles of inorganic chemistry, organic chemistry, an‎d nanotechnology, an‎d it can open new pathways for designing sustainable catalytic systems

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