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Synthesis of Novel Bimetallic Nanocomposite of Copper and Silver Based on Metal Organic Frameworks and Investigation of Its Application as Catalyst in Sulfonation Reaction

Yaghoubnejad Pazoki, Parisa | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55920 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Matloubi Moghaddam, Firouz
  7. Abstract:
  8. In recent years, bimetallic metal-organic frameworks have attracted the great attention of researchers due to their dual properties and synergistic effects. In this research and inspired by green chemistry, the synthesis of a magnetic nanocomposite of the defective green metal-organic framework was implemented, which carries metallic silver nanoparticles (Ag NPs@Cu-MOF). Then, the sulfonated compounds were synthesized with the prepared nanocomposite because of the importance and widespread medicinal use of sulfur-containing compounds especially sulfonated compounds, and the difficulty of their preparation methods. It is noteworthy to mention that the sulfonation reaction was done by activating the C(sp3)-H bond and using of dimethyl sulfoxide as solvent and reagent. All of the acetophenone derivatives with the electron-withdrawing and electron-donating groups, participated in this reaction and products were obtained with high yields. At the same time, several novel derivatives were synthesized. To characterize and confirm the catalyst structure, different techniques such as FT-IR, FE-SEM, TEM, EDX, BET, OES-ICP, and XRD were performed. Also, the back titration method was used to determine the amount of catalyst acid sites. In addition, FT-IR, 1H-NMR, 13C-NMR, and Mass spectroscopy were used to identify the structure of the final products. Finally, DFT calculations were performed for three derivatives, and a good agreement was observed between the experimental and computational results in the spectrometry section. Moreover, the reactivity descriptors of these derivatives were calculated.
  9. Keywords:
  10. Metal-Organic Framework ; Green Nanocomposite ; Sulfonation ; Metallic Nanoparticles ; Carbon-Hydrogen Bond Activation ; Dimethyl Sulfoxide

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