Deep oxidative desulfurization of benzothiophene and dibenzothiophene with a peroxophosphotungstate–ionic liquid brush assembly. (14th July 2015)

• Record Type: Journal Article
• Authors: Shi, Xian‐Ying; Sun, Man; Fan, Juan; Wang, Peng‐Min; Ma, Wen‐Juan; Wei, Jun‐Fa
• Is Part Of: Applied organometallic chemistry. Volume 29:Number 9(2015:Sep.)
• Page Start: 633
• Page End: 637
• Publication Date: 2015-07-14
• Subjects: Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.3344
• Languages: English
• ISSNs: 0268-2605

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A novel, efficient and reusable heterogeneous catalytic assembly of peroxophosphotungstate held in an ionic liquid brush was synthesized and an extraction and catalytic oxidative <named-content content-type="reactionType" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">desulfurization</named-content> (ECODS) procedure was developed for a model oil of benzothiophene (BT) and dibenzothiophene (DBT) using 30 wt% <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">hydrogen peroxide</named-content> as terminal oxidant and methanol as solvent under mild conditions. Several factors that affect <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">sulfur removal</named-content> were investigated in detail. The highest <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">sulfur removal</named-content> can reach 100% for BT in 7 h at 70 °C when the molar ratio of H<sub>2</sub>O<sub>2</sub>, S and catalyst is 10:1:0.025. The <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">sulfur removal</named-content> for DBT can also reach 100% in 4 h at 50 °C with the same molar ratio of H<sub>2</sub>O<sub>2</sub>, S and catalyst. The experimental results demonstrate that this ECODS process has no apparent scale‐up effect. The catalyst can be easily recovered (via simple filtration) and recycled five times without a significant decrease in activity. Copyright © 2015 John Wiley & Sons, Ltd.</p> </abstract>