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 > QD1-999 Chemistry |
| Divisions: | 08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1) |
| Depositing User: | Dr.rer.nat Risfidian Mohadi |
| Date Deposited: | 19 Dec 2019 04:30 |
| Last Modified: | 19 Dec 2019 04:30 |
| URI: | http://repository.unsri.ac.id/id/eprint/21958 |
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