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Identifier 000378654
Title Αναγωγικές διεργασίες καρβονυλικών και νιτρο ενώσεων καταλυόμενες από νανοσωματίδια Au
Alternative Title Facile reproductive processes of carbon and nitro compounds catalyzed by Au nanoparticles
Author Βασιλικογιαννάκη, Ελένη Β
Thesis advisor Στρατάκης, Εμμανουήλ
Reviewer Ορφανόπουλος, Μιχαήλ
Κατερινόπουλος, Χαράλαμπος
Abstract In the present thesis, we studied the hydrosilylation of carbonyl compounds by hydrosilanes, catalyzed by gold nanoparticles (Au NPs) supported on TiO2, as well as, the reduction of nitro compounds by the ammonia-borane complex (NH3BH3), also catalyzed by Au/TiO2. • We found that Au/TiO2 (0.5 mol%) catalyzes the hydrosilylation of carbonyl compounds in the presence of 1,1,3,3-tetramethyldisiloxane (TMDS) in excellent yields and at rates >10 times faster relative to simple hydrosilanes. • For the first time in the literature Au/TiO2 (0.1 mol%, even at ppm loading level) catalyzes the fast and quantitative reduction of nitroarenes into anilines and nitroalkanes into alkyl hydroxylamines by the ammonia-borane complex (NH3BH3) in excellent yields. NH3BH3 is used in very low excess (1.5 equivalents), in contrast to previous studies which utilize NaBH4 in more than two orders of magnitude fold molar excess.
Language Greek
Subject Ammonia-Borane Complex
Carbonyl Compounds
Gold Nanoparticles
Heterogeneous Catalysis
Hydrosilanes
Hydrosilylation
Reduction
Tetramethyldisiloxane
Αναγωγή
Ετερογενής Κατάλυση
Καρβονυλικές Ενώσεις
Νανοσωματίδια Χρυσού
Νιτροενώσεις
Σύμπλοκο Αμμωνίας-Βορανίου
Τετραμεθυλοδισιλοξάνιο
Υδροσιλάνια
Υδροσιλυλίωση
Issue date 2013-02-19
Collection   Faculty/Department--Faculty of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
Permanent Link https://elocus.lib.uoc.gr//dlib/5/b/5/metadata-dlib-1362140281-138845-12607.tkl Bookmark and Share
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