E-Locus - Institutional Repository of the University of Crete - Μελέτη οξείδωσης ακόρεστων οργανικών ενώσεων με την χρήση νέων ετερογενών καταλυτικών συστημάτων C60/MCM-41

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Identifier

000374974

Title

Μελέτη οξείδωσης ακόρεστων οργανικών ενώσεων με την χρήση νέων ετερογενών καταλυτικών συστημάτων C60/MCM-41

Alternative Title

Photooxidations of unsaturated organic compounds by using new heterogenous catalytic systems C60/MCM-41

Author

Γιαννακάκη, Σοφία Κων.

Thesis advisor

Ορφανόπουλος, Μιχαήλ

Abstract

Τhe present M.Sc. thesis includes the study of the catalytic activity of a series of new photocatalytic materials in which the C₆₀ has been immobilized on the surface of MCM-41. Four catalysts C₆₀/MCM-41 have been prepared by utilizing the successive dry impregnation method. These four catalytic systems contain an active phase of 3, 6, 9 and 12 wt%, respectively. Besides all the advantages of heterogeneous catalysis, the present studies showed an increase of the reactivity of these new catalysts compared to that observed for unsupported C₆₀. Moreover, these photocatalytic systems have been assessed in the heterogeneous photooxidation via ¹Ο₂ of a series of representative unsaturated substrates. These reactions include: (a) the [4+2] cycloaddition, (b) the [2+2] cycloaddition, (c) the heteroatom oxidation, and (d) the oxidation of phenols. In all these cases the catalytic system C₆₀/MCM-41 showed high reactivity for the production of synthetically useful substrates.

Language

Greek

Subject

Fullerene C60

ene reaction

ene αντίδραση

heterogeneous catalysis

singlet oxygen (1O2)

Ετερογενής κατάλυση

Οξυγόνο απλής κατάστασης (1O2),

Φουλερένιο C60

Issue date