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

被引：15

作者：

Cimpeanu, V.

Parvulescu, V. ^{[1
]}

Parvulescu, V. I. ^{[1
]}

Thompson, J. M.

Hardacre, C.

机构：

[1] Queens Univ Belfast, QUILL Ctr, Belfast BT9 5AG, Antrim, North Ireland

[2] Romanian Acad, CD Nenitzescu Inst Organ Chem, Bucharest 060023, Romania

[3] Univ Bucharest, Dept Chem Technol & Catalysis, Bucharest 030016, Romania

[4] Queens Univ Belfast, Sch Chem, Belfast BT9 5AG, Antrim, North Ireland

来源：

CATALYSIS TODAY | 2006年 / 117卷 / 1-3期

关键词：

oxidation of thioethers; ionic liquids; dispersed Ta-silica mesoporous catalysts; HETEROGENEOUS CATALYST; PYRIMIDINE THIOETHER; SULFOXIDATION; CONVERSION; NIOBIUM;

D O I：

10.1016/j.cattod.2006.05.021

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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 pi*, alpha and beta solvent parameters. Characterization of the catalysts was made by ICP-AES, adsorption-desorption isotherms of N-2 at 77 K, XRD, SEM and TEM. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：126 / 132

页数：7

共 31 条

[1]

BARTHE P, 1996, Patent No. 9611740

[2] Hydrophobic, highly conductive ambient-temperature molten salts [J].