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Efficient Oxidative Desulfurization (ODS) of commercial diesel with TBHP under mild conditions catalyzed by polymolybdates supported on Al2O3

Ali, Rusmidah and Wan Abdullah, Wan Nazwanie and Wan Abu Bakar, Wan Azelee (2013) Efficient Oxidative Desulfurization (ODS) of commercial diesel with TBHP under mild conditions catalyzed by polymolybdates supported on Al2O3. In: 27th Regional Conference of Solid State Science and Technology, hysics With Electronics Programme, School of Science and Technology, Universiti Malaysia Sabah, Kota Kinabalu, Sabah. 20-22 December 2013, 2013.

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Abstract

Due to the low specifications for sulfur content in diesel, a lot of research work are been conducted to develop alternative method for desulfurization. Catalytic oxidative desulfurization (Cat-ODS) has been found to be an alternative method to replace a conventional method which is hydrodesulfurization.New catalyst formulation using tert-butyl hydroperoxide polymolybdate based catalyst system was investigated in this research utilizing tert-butyl hydroperoxide (TBHP) as oxidant and dimethylformamide (DMF) as solvent for extraction. A series of polymolybdate supported alumina catalysts were prepared using wet impregnation method, ageing at ambient room temperature for 24 hours and followed by calcination process. A commercial diesel with 440 ppmw of total sulfur was employed to evaluate the elimination of sulfur compounds. Besides, the percentage of sulfur removal was measured by gas chromatography-flame photometric detector (GC-FPD). The sulfur content in commercial diesel was successfully reduced from 440 ppmw to 35 ppmw under mild condition followed by solvent extraction. From catalytic testing, Mo-Al2O3 calcined at 500°C was revealed as the most potential catalyst which gave 92% of sulfur removal.

Item Type:Conference or Workshop Item (Paper)
Subjects:Q Science
Divisions:Science
ID Code:39614
Deposited By: Liza Porijo
Deposited On:30 Jun 2014 15:55
Last Modified:27 Sep 2017 12:02

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