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Oxidation Coupled with Extraction to Remove Thiophene and Benzothiophene from Dodecane using [Mmlm)DMP Ionic Liquid.

Abdullah, Nurul Suhaira (2009) Oxidation Coupled with Extraction to Remove Thiophene and Benzothiophene from Dodecane using [Mmlm)DMP Ionic Liquid. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

High concentration release of sulfur from fuel to the environment can cause accumulation in the ecological system, thus posing a significant danger to human health. The available technology of for sulfur removal from fuel which is hydrodesulfurization (HDS) are rather expensive, require severe operating condition, high hydrogen consumption, and limited to aliphatic sulfur species. Therefore, vigorous studies are being conducted to develop more effective and cheaper alternatives. One of the promising alternatives that attract high attention is using ionic liquid for desulfurization due to its unique properties as a solvent and catalyst. This project is focused on removing sulfur from crude oil model by using oxidation coupling with extraction method. The ionic liquid use in this research work is methylmethylimidazolium dimethylphospate,[Mmim]DMP. There are five main stages in this project which are preparation of ionic liquid, characterization of ionic liquid properties, model oil preparation, desulfurization and data analyzing. Two sulfur species were used: thiophene and benzothiophene. Three different amount of sulfur in model oil were employed which are 2%, 4% and 6%. The desulfurization process was conducted at ambient temperature. The percentages of sulfur removal were analyzed using X-ray fluorescence (XRF). The results showed that percentage of sulfur removal always followed the order of thiophene > benzothiophene. The significance of this finding is such that although thiophene and benzothiophene cannot be removed efficiently by HDS process, they can be easily extracted by ionic liquid. This is due to strong 11:-x interaction between unsaturated bonds of those sulfur species and the imidazolium ring of ionic liquid.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Separation Process
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 09:35
Last Modified: 22 Oct 2013 09:35
URI: http://utpedia.utp.edu.my/id/eprint/9101

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