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Oxidative desulfurization of 4,6-dimethyl dibenzothiophene and light cycle oil over supported molybdenum oxide catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
52010 46862 1969 4 PDF Available
Title
Oxidative desulfurization of 4,6-dimethyl dibenzothiophene and light cycle oil over supported molybdenum oxide catalysts
Abstract

Alumina, silica–alumina and magnesia–alumina supported, unpromoted and bismuth promoted 15 wt.% molybdenum oxide catalysts were prepared and characterized by XRD, surface area and oxygen chemisorption. The catalysts were evaluated for the oxidative desulfurization (ODS) of 4,6-dimethyl dibenzothiophene to the corresponding sulfone using tert-butyl hydroperoxide as oxidant. Among all the catalysts examined, Bi-Mo/Siral 1 exhibited the best catalytic performance compared to all the catalysts examined. The catalyst also showed high conversion with appreciable stability until 300 h during ODS of light cycle oil (LCO) in batch and fixed bed reactors. The performance of the catalysts was discussed in terms of molybdenum oxide dispersion measured by oxygen chemisorption and acidity of the support.

Keywords
Oxidative desulfurization; Molybdenum oxide; 4,6-DMDBT; Light cycle oil; tert-Butyl hydroperoxide
First Page Preview
Oxidative desulfurization of 4,6-dimethyl dibenzothiophene and light cycle oil over supported molybdenum oxide catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 10, 10 June 2008, Pages 1966–1969
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis