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PHOTOOXIDA TIVE-EXTRACTIVE DEEP DESULFURTZA TION OF DIESEL FUEL USING Cu-Fe/Ti02 AND EUTECTIC-BASED TONIC LIQUIDS

MOHD ZAID, HAYYIRATUL FATIMAH (2016) PHOTOOXIDA TIVE-EXTRACTIVE DEEP DESULFURTZA TION OF DIESEL FUEL USING Cu-Fe/Ti02 AND EUTECTIC-BASED TONIC LIQUIDS. PhD thesis, Universiti Teknologi PETRONAS.

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Abstract

Due to the dramatic environmental impact of sulfur oxides contained in engines emissions, sulfur content specification in fuels are becoming more and more stringent worldwide. Hydrodesulfurization (HDS) is the conventional process to reduce sulfur levels if the fuels. However, HDS requires high temperature and high pressure in order to eliminate the sulfur species. Refractory sulfur species such as dibenzothiophene and its alkyl derivatives are less reactive to this process. Due to this reason, alternative sulfur removal methods are being explored. An efficient photooxidative-extractive system for deep desulfurization of model fuel and actual diesel fuel was explored. A series of monometallic (Cu!Ti02 and Fe/Ti02) and bimetallic (Cu-Fe/Ti02) photocatalysis were synthesized and characterized using Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) coupled with Energy Dispersive X-Ray analysis (EDX), High Resolution Transmission Electron Microscopy (HRTEM) and Diffuse Reflectance UV-Visible Spectroscopy (DR-UV-Vis), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Photoelectron Spectroscopy (XPS), Temperature Programmed Reduction analysis (TPR) and Brunauer-Emmett-Teller (BET) surface area and porosity analysis. The Ti02 were synthesized employing solgel hydrothermal method. The Ti02 was then modified with metal dopants (i.e Cu or/and Fe) by wet-impregnation method to extend the absorbance capacity of the photocatalyst in the visible region. The photocatalyst preparation and photooxidation parameters for photooxidative-ectractive deep desulfurization under visible light illumination were optimized using response surface methodology (RSM).

Item Type: Thesis (PhD)
Academic Subject : Academic Department - Foundation And Applied Science
Subject: Q Science > Q Science (General)
Divisions: Fundamental and Applied Sciences
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 16 Jan 2019 09:17
Last Modified: 16 Jan 2019 09:17
URI: http://utpedia.utp.edu.my/id/eprint/18298

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