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Identifier |
000355708 |
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http://elocus.lib.uoc.gr/ |
Title |
Σύνθεση νέων πορφυρινικών συμπλόκων των Ru, Rh, Pt, Pd με εφαρμογή στην υδατική διφασική κατάλυση |
Alternative Title |
Synthesis of new porphyrinic complexes of Ru, Rh, Pt, Pd and their use in aquwous diphasic catalysis |
Author
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Στάγγελ, Χριστίνα-Επιστήμη
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Thesis advisor
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Κουτσολέλος, Αθανάσιος
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Abstract |
One of the major developments of the last twenty years in homogeneous catalysis is
the idea of using biphasic catalytic systems, for easy and quick separation of the
catalyst from the products / reactants. The main aim of these biphasic systems is
“… the use of two immiscible liquid phases, one containing the catalyst and the
other containing the substrate …”.
The application of aqueous-organic biphasic system using water-soluble catalyst
complexes bearing various transition metals has attracted particular interest mainly for
environmental and economic reasons. The substitution of organic solvents from water
in a biphasic system is important as water is non-flammable, non toxic, odorless,
colorless and cheap. In this project, water-soluble porphyrin complexes with
transitional metals were selected as catalysts. This was not accidental, since
porphyrins are known for their catalytic activity. The most famous example is found
in nature. Cytochrome P450 - the active centre of which is an iron porphyrin - is a
member of the group of enzymes that catalyze the hydroxylation of hydrocarbons
with molecular oxygen by reductive cleavage of O-O bond.
In this current work, it was successfully achieved the synthesis and characterization of
water-soluble porphyrin complexes of rhodium, ruthenium, palladium and platinum
and were assessed towards hydrogenation and Heck reactions. The substrate at the
hydrogenation reaction was the trans – cinnamaldehyde while styrene and
bromobenzene were used for the Heck reaction.
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Language |
Greek |
Subject |
Heck |
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Heck reaction |
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biphasic homogeneous catalysis |
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hydrogenation |
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palladium porphyrin |
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platinum porphyrin |
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rhodium porphyrin |
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ruthenium porphyrin |
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trans – cinnamaldehyde |
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Διφασική ομογενής κατάλυση |
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Πορφυρίνη του παλλαδίου |
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Πορφυρίνη του ροδίου |
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Υδρογόνωση |
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πορφυρίνη του ρουθηνίου |
Issue date |
2010-03-09 |
Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
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Type of Work--Post-graduate theses
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Views |
236 |