Oxidative Desulfurization of HDS Diesel Using the Aldehyde/ Molecular Oxygen Oxidation System
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Rao,Tumula Venkateshwar
Sain,Bir Kafola,Sudha Nautiyal,B.R Sharma,Y.K Nanoti,S.M Garg,M.O |
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| Date |
2010-05-14T07:00:09Z
2010-05-14T07:00:09Z 2010-05-14T07:00:09Z |
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| Identifier |
Energy & Fuels 2007, 21, 3420–3424
http://hdl.handle.net/123456789/561 |
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| Description |
Oxidation of dibenzothiophene (DBT), 4-methyldibenzothiophene (4-MDBT), and 4,6-dimethyldibenzothiophene
(4,6-DMDBT) was studied using the isobutyraldehyde/molecular oxygen oxidation system in the
absence of metal catalyst as the sulfur present in hydrodesulfurized (HDS) diesel is mostly in the form of
substituted dibenzothiophenes. This oxidation system was found to oxidize these sulfur compounds to their
respective sulfones, and oxidation reactivity was found to decrease in the order 4,6-DMDBT > 4-MDBT >
DBT. Further, the study was extended to oxidation of sulfur compounds present in HDS diesel in a two-phase
system using the aldehyde/molecular oxygen oxidation system. The oxidized HDS diesel on extraction with
polar solvents showed remarkable reduction in total sulfur. Acetonitrile was found to be the most effective
among solvents studied, and isobutyraldehyde was observed to be the best among aldehydes studied. In HDS
diesel, total sulfur could be reduced from 448 to 77 ppm by oxidation followed by solvent extraction, and it
could be further reduced to 31 ppm by passing through a silica gel column.
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| Language |
en_US
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| Subject |
Desulfurization
HDS Diesel Aldehyde |
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| Title |
Oxidative Desulfurization of HDS Diesel Using the Aldehyde/ Molecular Oxygen Oxidation System
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| Type |
Article
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