Oxidative Desulfurization of Dibenzothiophene Using Dawson Type Heteropoly Compounds/Tantalum as Catalyst

Mohadi, Risfidian and Teresia, Luci and Fithri, Najma Annuria and Lesbani, Aldes and Hidayati, Nurlisa (2016) Oxidative Desulfurization of Dibenzothiophene Using Dawson Type Heteropoly Compounds/Tantalum as Catalyst. Indonesian Journal of Chemistry, 16 (1). pp. 105-110. ISSN 1411-9420

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    Abstract

    Catalyst (NH4)6[-P2W18O62]/Ta has been synthesized by simple wet impregnation at 30-40 °C under atmospheric conditions using Dawson type polyoxometalate (NH4)6[-P2W18O62] and tantalum. The catalyst was characterized by FTIR spectrophotometer, XRD, SEM, and N2 adsorption desorption methods. FTIR spectrum of (NH4)6[-P2W18O62]/Ta showed that Dawson type polyoxometalate (NH4)6[-P2W18O62] and Ta was successfully impregnated which was indicated by vibration spectrum at wavenumber of 900-1100 cm-1 for polyoxometalate and 550 cm-1 for Ta. The surface area of the (NH4)6[-P2W18O62]/Ta after impregnation was higher than (NH4)6[- P2W18O62]•nH2O and its morphology was found to be uniform. The catalytic activity of (NH4)6[-P2W18O62]/Ta toward desulfurization of dibenzothiophene was three times higher than the original catalyst of (NH4)6[-P2W18O62]•nH2O without impregnation. The catalytic regeneration test of catalyst (NH4)6[-P2W18O62]/Ta showed that the catalytic activity for first regeneration of catalyst has similar catalytic activity with the fresh catalyst without loss of catalytic activity indicated by almost similar percent conversion. Keywords: dibenzothiophene; Dawson type; heteropoly; tantalum; desulfurization

    Item Type: Article
    Subjects: Q Science > QD Chemistry
    Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry
    Depositing User: Dr.rer.nat Risfidian Mohadi
    Date Deposited: 03 Jun 2016 21:14
    Last Modified: 03 Jun 2016 21:14
    URI: http://eprints.unsri.ac.id/id/eprint/6497

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