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Immobilazation of Manganese-Porphyrin Complex on Magnetic Nanoparticles and its Application as a Catalyst for the Epoxidation of Olefins and Oxidation of Sulfides

Hosseini, Morteza | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51388 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Bagherzadeh, Mojtaba
  7. Abstract:
  8. The goal of this study is to synthesise and study the catalytic properties of a Mn-Porphyrin complex fixed on a magnetic nanoparticle bed. This nanocatalyst was used in oxidation of sulfides and epoxylation of olefin. In the multistage synthesis of this catalyst, iron oxide magnetic nanoparticles were first prepared, then, by silanizing these nanoparticles, and then using the 3-chloropropyltrimethoxy methanol reactor, Immobilzation the material on the substrate and immediately react in reaction Substitution of the nucleus of friendship and using a sodium azide reaction, bromide is replaced by azide. Subsequently, by synthesising 4-hydroxy porphyrin and replacing one of its positions with propylene bromide, it converted to asymmetric porphyrin and then reacted with manganese metal with this porphyrin, and in the final step, the manganese-porphyrin complex Immobilzation on annealed nanoparticles. After detecting the resulting catalysts by ultraviolet spectroscopy, substrate, X-ray diffraction, scanning electron microscopy, thermal analysis, vibration sample magnetometer and inductively coupled plasma, this catalyst was used as a catalyst for epoxylation of olefins, including cyclooctene With a yield of 85% and selectivity of 95% as well as oxidation of sulfides including benzyl phenylsulfide with a yield of 82% and selectivity of 70%. The advantages of this nanocatalyser include the easy separation using the magnet, the availability and the lack of activity and reuse of the nanocatalysis for several times
  9. Keywords:
  10. Nano Catalyst ; Magnetic Nanodot ; Olefins Epoxidation ; Sulfide Oxidation ; Manganese-Porphyrin Complexes

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