Thioethers oxidation on dispersed Ta-silica mesoporous catalysts in ionic liquids

V. Cimpeanu; V. Pârvulescu; V. I. Pârvulescu; J. M. Thompson; C. Hardacre

doi:10.1016/j.cattod.2006.05.021

Thioethers oxidation on dispersed Ta-silica mesoporous catalysts in ionic liquids

V. Cimpeanu
, V. Pârvulescu
, V. I. Pârvulescu
, J. M. Thompson
, C. Hardacre^*

^*Corresponding author for this work

Institute of Organic Chemistry C. D. Nenitzescu
University of Bucharest
QUILL Research Center
Queen's University Belfast

Research output: Contribution to journal › Article › peer-review

Abstract

The oxidation of the various aliphatic, aromatic and heteroaromatic thioethers was carried out in a range of ionic liquids, 1-butyl-3-methylimidazolium triflate, 1-butyl-1-methyl-pyrolidinium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium tetrafluoborate and 1-butyl-2,3-dimethylimidazolium bis(trifluoromethane-sulfonyl)amide, using sol-gel prepared mixed oxide silica tantalum and tantalum grafted MCM-41 catalysts. For comparison catalytic tests in molecular solvents (acetone, acetonitrile, dioxane and ethanol) were also performed. Excellent hydrogen peroxide efficiencies were obtained on these catalysts. The conversion data has been correlated with the Kamlet-Taft π^*, α and β solvent parameters. Characterization of the catalysts was made by ICP-AES, adsorption-desorption isotherms of N₂ at 77 K, XRD, SEM and TEM.

Original language	English
Pages (from-to)	126-132
Number of pages	7
Journal	Catalysis Today
Volume	117
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cattod.2006.05.021
Publication status	Published - 30 Sept 2006

Keywords

Dispersed Ta-silica mesoporous catalysts
Ionic liquids
Oxidation of thioethers

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10.1016/j.cattod.2006.05.021

Cite this

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title = "Thioethers oxidation on dispersed Ta-silica mesoporous catalysts in ionic liquids",

abstract = "The oxidation of the various aliphatic, aromatic and heteroaromatic thioethers was carried out in a range of ionic liquids, 1-butyl-3-methylimidazolium triflate, 1-butyl-1-methyl-pyrolidinium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium tetrafluoborate and 1-butyl-2,3-dimethylimidazolium bis(trifluoromethane-sulfonyl)amide, using sol-gel prepared mixed oxide silica tantalum and tantalum grafted MCM-41 catalysts. For comparison catalytic tests in molecular solvents (acetone, acetonitrile, dioxane and ethanol) were also performed. Excellent hydrogen peroxide efficiencies were obtained on these catalysts. The conversion data has been correlated with the Kamlet-Taft π*, α and β solvent parameters. Characterization of the catalysts was made by ICP-AES, adsorption-desorption isotherms of N2 at 77 K, XRD, SEM and TEM.",

keywords = "Dispersed Ta-silica mesoporous catalysts, Ionic liquids, Oxidation of thioethers",

author = "V. Cimpeanu and V. P{\^a}rvulescu and P{\^a}rvulescu, \{V. I.\} and Thompson, \{J. M.\} and C. Hardacre",

year = "2006",

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doi = "10.1016/j.cattod.2006.05.021",

language = "English",

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AU - Cimpeanu, V.

AU - Pârvulescu, V.

AU - Pârvulescu, V. I.

AU - Thompson, J. M.

AU - Hardacre, C.

PY - 2006/9/30

Y1 - 2006/9/30

N2 - The oxidation of the various aliphatic, aromatic and heteroaromatic thioethers was carried out in a range of ionic liquids, 1-butyl-3-methylimidazolium triflate, 1-butyl-1-methyl-pyrolidinium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium tetrafluoborate and 1-butyl-2,3-dimethylimidazolium bis(trifluoromethane-sulfonyl)amide, using sol-gel prepared mixed oxide silica tantalum and tantalum grafted MCM-41 catalysts. For comparison catalytic tests in molecular solvents (acetone, acetonitrile, dioxane and ethanol) were also performed. Excellent hydrogen peroxide efficiencies were obtained on these catalysts. The conversion data has been correlated with the Kamlet-Taft π*, α and β solvent parameters. Characterization of the catalysts was made by ICP-AES, adsorption-desorption isotherms of N2 at 77 K, XRD, SEM and TEM.

AB - The oxidation of the various aliphatic, aromatic and heteroaromatic thioethers was carried out in a range of ionic liquids, 1-butyl-3-methylimidazolium triflate, 1-butyl-1-methyl-pyrolidinium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)amide, 1-butyl-3-methyl-imidazolium tetrafluoborate and 1-butyl-2,3-dimethylimidazolium bis(trifluoromethane-sulfonyl)amide, using sol-gel prepared mixed oxide silica tantalum and tantalum grafted MCM-41 catalysts. For comparison catalytic tests in molecular solvents (acetone, acetonitrile, dioxane and ethanol) were also performed. Excellent hydrogen peroxide efficiencies were obtained on these catalysts. The conversion data has been correlated with the Kamlet-Taft π*, α and β solvent parameters. Characterization of the catalysts was made by ICP-AES, adsorption-desorption isotherms of N2 at 77 K, XRD, SEM and TEM.

KW - Dispersed Ta-silica mesoporous catalysts

KW - Ionic liquids

KW - Oxidation of thioethers

UR - https://www.scopus.com/pages/publications/33747823525

U2 - 10.1016/j.cattod.2006.05.021

DO - 10.1016/j.cattod.2006.05.021

M3 - Article

AN - SCOPUS:33747823525

SN - 0920-5861

VL - 117

SP - 126

EP - 132

JO - Catalysis Today

JF - Catalysis Today

IS - 1-3

ER -

Thioethers oxidation on dispersed Ta-silica mesoporous catalysts in ionic liquids

Abstract

Keywords

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