Sorbents and separation membranes involving ionic liquid phases as precursors (Doctoral thesis)

Τζιάλλα, Ουρανία

Ionic Liquids (ILs) are a class of compounds composed exclusively of ions and are liquids at temperatures below to 100°C, whereas the most widely used ILs remain liquid even at ambient temperatures. These compounds are of special interest in recent years since they compile a combination of remarkable features, such as low melting points, negligible vapor pressure and ability to dissolve a plurality of components, high chemical and thermal stability and great chemical tunability. In this dissertation, porous adsorbents and separation membranes were developed utilizing ILs as precursors. Specifically, efforts were undertaken to develop liquid membranes using the method of post-synthesis modification of porous substrates with ILs and sol-gel method. In the sol-gel method the IL was one of the components of the synthetic procedures that also served as structure directing agent of the porous network in which it was trapped. In addition, ILs were used as precursors for developing porous carbon adsorbents and porous carbon membranes for gas separations. The developed porous carbons were studied with respect to the adsorption properties for various gases as well as to their catalytic properties for oxygen reduction/reaction, whereas the developed liquid and carbon membranes were evaluated for their separation properties.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Πολυτεχνική Σχολή. Τμήμα Μηχανικών Επιστήμης Υλικών
Subject classification: Πορώδη υλικά
Keywords: Ιοντικά υγρά,πορώδη υλικά,μεμβράνες,διαχωρισμός αερίων,ανθρακούχοι προσροφητές,ionic Liquids,porous Materials,membranes,gas Separation,carbonatious sorbents
Appears in Collections:Διδακτορικές Διατριβές

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