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INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL

The prospect of ionic liquids (ILs) as industrial solvent for desulfurization process may be illustrated from several explanations of the solute-solvent interaction point of view. For the aromatic organosulfur as a solute, the explanations of its miscibility in ILs are mostly described through...

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Main Author: ABDULLAH, SYAMSUL BAHARI
Format: Thesis
Language:English
Published: 2012
Subjects:
TP Chemical technology
Online Access:http://utpedia.utp.edu.my/21606/1/2012%20-CHEMICAL-INVESTIGATION%20ON%20POTENTIAL%20IONIC%20LIQUIDS%20FOR%20EXTRACTIVE%20DESULFURIZATION%20OF%20DIESEL-%20SYAMSUL%20BAHARI%20ABDULLAH.pdf
http://utpedia.utp.edu.my/21606/
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spelling my-utp-utpedia.216062021-09-23T09:59:21Z http://utpedia.utp.edu.my/21606/ INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL ABDULLAH, SYAMSUL BAHARI TP Chemical technology The prospect of ionic liquids (ILs) as industrial solvent for desulfurization process may be illustrated from several explanations of the solute-solvent interaction point of view. For the aromatic organosulfur as a solute, the explanations of its miscibility in ILs are mostly described through n-electron density by means of n-n or CH-n interaction mechanism. The prediction using COSMO-RS which majorly rely on hydrogen bonding mechanism, showed inconsistent results against experimental data. The present study using Raman spectroscopy has led to the same conclusion where n�electron density becomes a vital viewpoint in the process of screening potential ILs for desulfurization. The use of a new complementary method which estimates the aromaticity index (AI) for cation and double bond equivalent (DBE) for anion selection showed good agreement between the literature and experimental results. The AI and DBE methods were later used to select the appropriate combination of cation and anion ofiLs for extractive desulfurization study. From the 407 potential ILs selected based on COSMO-RS database, 25 ILs as suggested from the complementary method were synthesized for further evaluation. Out of the 25, some which are commercially available were purchased for validation purposes. The synthesized ILs were characterized accordingly by 1 H NMR, 13C NMR, elemental analysis, and halide content including their water contents, densities and refractive indices. A single batch extraction at room temperature for extracting benzothiophene (BT) from model oil (n-C12) was well studied to determine the optimum extracting conditions of stirring speed and extraction time. The effect of three important process variables (mass ratio, BT concentration and temperature) were also investigated using Response Surface Methodology (RSM). 2012-12 Thesis NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/21606/1/2012%20-CHEMICAL-INVESTIGATION%20ON%20POTENTIAL%20IONIC%20LIQUIDS%20FOR%20EXTRACTIVE%20DESULFURIZATION%20OF%20DIESEL-%20SYAMSUL%20BAHARI%20ABDULLAH.pdf ABDULLAH, SYAMSUL BAHARI (2012) INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL. PhD thesis, Universiti Teknologi PETRONAS.
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
ABDULLAH, SYAMSUL BAHARI
INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
description The prospect of ionic liquids (ILs) as industrial solvent for desulfurization process may be illustrated from several explanations of the solute-solvent interaction point of view. For the aromatic organosulfur as a solute, the explanations of its miscibility in ILs are mostly described through n-electron density by means of n-n or CH-n interaction mechanism. The prediction using COSMO-RS which majorly rely on hydrogen bonding mechanism, showed inconsistent results against experimental data. The present study using Raman spectroscopy has led to the same conclusion where n�electron density becomes a vital viewpoint in the process of screening potential ILs for desulfurization. The use of a new complementary method which estimates the aromaticity index (AI) for cation and double bond equivalent (DBE) for anion selection showed good agreement between the literature and experimental results. The AI and DBE methods were later used to select the appropriate combination of cation and anion ofiLs for extractive desulfurization study. From the 407 potential ILs selected based on COSMO-RS database, 25 ILs as suggested from the complementary method were synthesized for further evaluation. Out of the 25, some which are commercially available were purchased for validation purposes. The synthesized ILs were characterized accordingly by 1 H NMR, 13C NMR, elemental analysis, and halide content including their water contents, densities and refractive indices. A single batch extraction at room temperature for extracting benzothiophene (BT) from model oil (n-C12) was well studied to determine the optimum extracting conditions of stirring speed and extraction time. The effect of three important process variables (mass ratio, BT concentration and temperature) were also investigated using Response Surface Methodology (RSM).
format Thesis
author ABDULLAH, SYAMSUL BAHARI
author_facet ABDULLAH, SYAMSUL BAHARI
author_sort ABDULLAH, SYAMSUL BAHARI
title INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
title_short INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
title_full INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
title_fullStr INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
title_full_unstemmed INVESTIGATION ON POTENTIAL IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL
title_sort investigation on potential ionic liquids for extractive desulfurization of diesel
publishDate 2012
url http://utpedia.utp.edu.my/21606/1/2012%20-CHEMICAL-INVESTIGATION%20ON%20POTENTIAL%20IONIC%20LIQUIDS%20FOR%20EXTRACTIVE%20DESULFURIZATION%20OF%20DIESEL-%20SYAMSUL%20BAHARI%20ABDULLAH.pdf
http://utpedia.utp.edu.my/21606/
_version_ 1739832889623707648
score 13.211869

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