Oksidacijska desulfurizacija dizelskog goriva ionskim kapljevinama

undergraduate thesis

• Title (english): Oxidative desulfurization of diesel with ionic liquids
• Author: Vedran Horvatinec
• Mentor: Katica Sertić-Bionda (mentor)
• Committee member: Katica Sertić-Bionda (predsjednik povjerenstva)
• Committee member: Vesna Ocelić Bulatović (član povjerenstva)
• Committee member: Ivana Grčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2016-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering; Analysis, Synthesis and Management of Chemical Processes

Abstract

Danas, zbog brige o okolišu strogim normama se definira dozvoljena koncentracija sumpora u dizelskom gorivu te iznosi 10 mg kg^-1, a u planu su i daljnja smanjenja zbog čega je vrlo važno razviti učinkovit proces desulfurizacije poput oksidacijske desulfurizacije ionskim kapljevinama. Zadatak ovoga rada je istražiti proces oksidacijske desulfurizacije dizelskog goriva ionskim kapljevinama. Desulfurizacija, odnosno uklanjanje sumpora iz dizelskog goriva provodi se u industriji, a oksidacijska desulfurizacija ionskim kapljevinama je proces koji se razvio u zadnjem desetljeću i predstavlja revolucionarno otkriće za industriju jer ima mnogo prednosti pred klasičnim procesima. Pregledom literature može se uočiti da se značajna efikasnost kod uklanjanja sumpora iz dizelskih goriva može dobiti kombinacijom ionskih kapljevina i pogodnog oksidacijskog sredstva. Nadalje, bolju učinkovitost imaju ionske kapljevine koje nisu mješljive s vodom, odnosno nemaju izraženu polarnost. Ionske kapljevine 2. generacije su najzastupljenije u istraživanjima upravo zbog njihove kemijske i toplinske stabilnosti Najopsežnija istraživanja procesa oksidacijske desulfurizacije s ionskim kapljevinama provedena su s N-alkil-piridinijevim ionskim kapljevinama te imidazolijevim ionskim kapljevinama, a u istraživanju s amidnim ionskim kapljevinama postignuto je gotovo potpuno uklanjanje sumporovih spojeva BT-a i DBT-a. Proces oksidacijske desulfurizacije s ionskim kapljevinama je najbolje provoditi pri umjerenim temperaturama, optimalno pri 70 °C, a optimalno vrijeme provođenja procesa je 180 minuta te omjer ionske kapljevine i oksidansa bi trebao biti 1 : 1,1.

Abstract (english)

Nowadays, stringent environmental regulations have defined the sulphur content in diesel fuel to less than 10 ppm and further reductions are planned so it is important to develop an efficient desulfurization process like the process of oxidative desulfurization with ionic liquids. The goal of this work was to explore the process of oxidative desulfurization of diesel with ionic liquids. Desulfurization, the process of removing sulfur from diesel is carried out in the industry mainly by the hidrodesulfurization process but there are also other processes like biodesulfurization, oxidative desulfurization and adsorption desulfurization. Oxidative desulfurization with ionic liquids is a process that was developed in last decade and represents a revolutionary discovery for the industry because it has many advantages over the classic method. From a variety of experimental researches it can be discerned that significant efficiency in sulfur removal from diesel can be obtain with the combination of ionic liquids and suitable oxidative substance. Furthermore, significant efficiency of the process with ionic liquids is achieved if they are not miscible with water and don’t have pronounced polarity Second generation ionic liquids are the most represented in research because of their chemical and thermal stability. The most comprehensive studies of the process of oxidative desulfurization with ionic liquids were carried out with N-alkyl-pyridinium-based ionic liquids and imidazolium-based ionic liquids furthermore, using the amide-based ionic liquids an almost complete removal of benzothiophene and dibenzothiophene is achieved. The process of oxidative desulfurization with ionic liquids is preferably carried out at moderate temperatures, optimally at 70 °C during 180 minutes which is the optimum time of the process and with the ratio of ionic liquid and oxidant 1: 1.1.

• Keywords: desulfurizacija; dizelsko gorivo; ionske kapljevine; sumporovi spojevi
• Keywords (english): desulfurization; diesel; ionic liquid; sulfur compounds
• Language: croatian
• URN:NBN: urn:nbn:hr:149:042307
• Study programme: Title: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry; Course: Environmental chemistry and green technologies; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-02-05 11:43:30