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Vol. 29 No. 8 (2017): Vol 29 Issue 8

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Catalytic Performance of Ammonium Salt of Molybdenum Heteropoly Acid Supported Silica for Oxidative Desulfurization of Benzothiophene, Dibenzothiophene and 4,6-Dimethyldibenzothiophene in Model Oil

https://doi.org/10.14233/ajchem.2017.20589
Deeptiraj Pant
Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal-462 003, India
Ramswaroop Singh Thakur
Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal-462 003, India
Sunder Lal
Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal-462 003, India

Corresponding Author(s) : Sunder Lal

sunderlalin@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 8 (2017): Vol 29 Issue 8

Abstract

An ammonium salt of molybdenum heteropoly acid was loaded on silica support (HPA-SiO2), used as catalyst in oxidative desulfurization for removing benzothiophene (BT), dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from model oil. The structural properties of prepared catalyst were studied by using various analytical techniques; Fourier transforms infrared spectroscopy, X-ray diffraction, scanning electron microscopy and thermogravimetric analysis. The results showed that the ammonium salt of molybdenum heteropoly acid highly dispersed on SiO2. The final catalyst exhibits good catalytic activity of oxidative desulfurization. The 94.6 % of thiophene compounds of the model oil were removed under optimal conditions; temperature at 80 °C, reaction time 100 min. The oxidation is decreased in order of DBT > 4,6-DMDBT > BT.

Keywords

Benzothiophene Dibenzothiophene 4,6-Dimethyldibenzothiophene Heteropoly acid Model oil
Pant, D., Thakur, R. S., & Lal, S. (2017). Catalytic Performance of Ammonium Salt of Molybdenum Heteropoly Acid Supported Silica for Oxidative Desulfurization of Benzothiophene, Dibenzothiophene and 4,6-Dimethyldibenzothiophene in Model Oil. Asian Journal of Chemistry, 29(8), 1723–1727. https://doi.org/10.14233/ajchem.2017.20589
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