Σύνθεση και χαρακτηρισμός νέων πρωτικών
ιοντικών υγρών, για εφαρμογή τους στο
διαχωρισμό του αζεοτροπικού μίγματος
αιθανόλης/νερού

Κατσαμπάνης, Παναγιώτης; Katsampanis, Panagiotis

dc.contributor.author	Κατσαμπάνης, Παναγιώτης	el
dc.contributor.author	Katsampanis, Panagiotis	en
dc.date.accessioned	2016-01-08T13:13:03Z
dc.date.available	2016-01-08T13:13:03Z
dc.date.issued	2016-01-08
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/41819
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.10837
dc.rights	Default License
dc.subject	Ιοντικά υγρά	el
dc.subject	Βιοαποικοδομησιμότητα	el
dc.subject	Εκχυλιστική απόσταξη	el
dc.subject	Ισορροπία ατμού-υγρού	el
dc.subject	Πρωτικά ιοντικά υγρά	el
dc.subject	Ionic liquids	el
dc.subject	Protic ionic liquids	el
dc.subject	Biodegradability	el
dc.subject	Extractive distillation	el
dc.subject	Vapor-liquid equilibrium	el
dc.title	Σύνθεση και χαρακτηρισμός νέων πρωτικών ιοντικών υγρών, για εφαρμογή τους στο διαχωρισμό του αζεοτροπικού μίγματος αιθανόλης/νερού	el
heal.type	bachelorThesis
heal.classification	Οργανική σύνθεση	el
heal.classification	Ισορροπία φάσεων	el
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2015-10-01
heal.abstract	ABSTRACT Increasing concern about environmental issues, has directed the attention of the scientific community to novel processes based on ‘’greener’’ technologies, such as the replacement of traditional organic solvents with more environmentally friendly alternatives. Ionic liquids are a massively growing sector that has been the object of numerous studies. It has been proved that, taking into consideration their interesting properties, ionic liquids could be a solution to the problem. Protic ionic liquids are a subcategory of ionic liquids and are synthesized via a proton transfer reaction, between equimolar quantities of a Bronsted acid and base. They have various advantages such as the lower cost of synthesis and their high purity because of the elimination of byproducts, during the synthetic process. Due to their interesting properties, ionic liquids can be utilized in fuels, lubricants and as entrainers in separation processes of azeotropic mixtures. The synthesis and structural characterization of the synthesized protic ionic liquids, are studied, during the present thesis. Ionic liquids 3-5 were produced for the very first time. The structural characterization of all the ionic liquids was done using nuclear magnetic resonance spectroscopy (1H NMR). The synthetic process followed a proton transfer reaction from carboxylic acids to amines, according to the following figure: Another problem posed is the enormous augmentation of the utilization of fossil fuels, which is a finite source and so we are up against a gradual exhaustion of this source. As a result, it is vital that, alternate sources are discovered and that they will be efficient, renewable and viable. One possible source is biofuels and more specifically bioethanol. The problem with bioethanol is the difficulty of its separation from water, with the highest possible purity, due to the azeotropic mixture they form. Recently there has been great interest in the utilization of ionic liquids, in separation processes of azeotropic mixtures, such as extractive distillation. Two out of total five ionic liquids were used in the extractive distillation of the azeotropic mixture of ethanol and water, in order for their effect to be studied: formic 2-hydroxy-ethylammonium (1) and butyric 2-hydroxy ethylammonium (2). 8 Both entrainers led to increased relative volatility of ethanol and consequently the azeotropic point was displaced or even completely broken. The azeotropic point disappeared using an initial concentration of less than 5% of IL1 and approximately 6,5-7% of IL2. Next, the biodegradation levels of the newly synthesized ionic liquids (3-5) were measured. The biodegradation levels were assessed using the standard manometric method of determining the BOD5 parameter. The percentage of biodegradation in some cases went up to 34%.	en
heal.advisorName	Δέτση, Αναστασία	el
heal.committeeMemberName	Βουτσάς, Επαμεινώνδας	el
heal.committeeMemberName	Μαγουλάς, Κωστής	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών. Τομέας Χημικών Επιστημών (I). Εργαστήριο Οργανικής Χημείας	el
heal.academicPublisherID	ntua
heal.numberOfPages	119 σ.
heal.fullTextAvailability	true