oa South African Journal of Chemical Engineering - Oxidative desulphurization followed by catalytic adsorption method
|Article Title||Oxidative desulphurization followed by catalytic adsorption method|
|© Publisher:||South African Institution of Chemical Engineers (SAIChE)|
|Journal||South African Journal of Chemical Engineering|
|Affiliations||1 University of Karachi, Pakistan and 2 University of Karachi, Pakistan|
|Publication Date||Jan 2013|
|Pages||14 - 28|
|Keyword(s)||Catalytic adsorption, Dibenzothiophene (DBT), Oxidative desulfurization, SWNT's and Zeolite catalytic support|
The oxidative desulphurization followed by catalytic adsorption method was used for desulfurization of diesel oil. The diesel fuel was oxidized at temperature range of 70-80°C with hydrogen peroxide (H2O2) in the presence of formic acid. The effectiveness of the process mainly depends on (1) Efficient decomposition of (H2O2) in the diesel to oxidize various Organic sulfur compounds (sulfones, sulfoxides) and to extract them via polar solvent (2). Developing and analyze the catalytic adsorbent for the adsorption of unextracted aromatic sulphur compound (DBT). A porous Zeolite catalytic support mainly composed of Alumina and Silica was synthesized, and the said catalytic support loaded with Single walled carbon Nanotubes (SWNT's) to enhance the catalyst adsorption capability. FTIR spectral images of diesel and SEM "Scanning electron microscopic images"/EDX "Energy-dispersive X-ray" studies of catalyst provided a better qualitative approach as visual assessment of porosity and surface behavior. The proposed method can remove complex sulfur compounds from diesel fuel of high sulphur contents up to 80% in total.
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