Desulfurization of dibenzothiophene by chemical oxidation and solvent extraction with Me3NCH2C6H5Cl•2ZnCl2 ionic liquid

被引：132

作者：

Li, Fa-tang ^{[1
]}

Liu, Rui-hong ^{[1
]}

Wen, Jin-hua ^{[1
]}

Zhao, Di-shun ^{[2
]}

Sun, Zhi-min ^{[1
]}

Liu, Ying ^{[1
]}

机构：

[1] Hebei Univ Sci & Technol, Coll Sci, Shijiazhuang 050018, Peoples R China

[2] Hebei Univ Sci & Technol, Coll Chem & Pharmaceut Engn, Shijiazhuang 050018, Peoples R China

来源：

GREEN CHEMISTRY | 2009年 / 11卷 / 06期

基金：

中国国家自然科学基金;

关键词：

DEEP DESULFURIZATION; ROOM-TEMPERATURE; SULFUR-COMPOUNDS; DIESEL FUEL; 1-ETHYL-3-METHYLIMIDAZOLIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE; LIGHT OIL; GASOLINE; ADSORPTION; MECHANISM; THIOPHENE;

D O I：

10.1039/b815575e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Desulfurization of dibenzothiophene (DBT) by a combination of both chemical oxidation and solvent extraction was investigated. Me3NCH2C6H5Cl center dot 2ZnCl(2) ionic liquid was prepared from cheap starting materials and used as extractant for oxidative desulfurization of DBT in n-octane. DBT in oil phase was extracted into ionic liquid phase and then oxidized to its corresponding sulfone by H2O2 and equal volume of acetic acid. The desulfurization yield of DBT in n-octane was 94% at 30 min under the conditions of H2O2/DBT molar ratio at 6 and V (ionic liquid) : V (n-octane) = 1 : 5, which was remarkably higher than that by mere extraction with ionic liquid (28.9%). The Me3NCH2C6H5Cl center dot 2ZnCl(2) ionic liquid could be recycled six times without a significant decrease in activity. Kinetics of oxidative desulfurization of DBT by H2O2 and acetic acid was first-order with an apparent rate constant of 0.0842 min(-1) and half-time of 8.23 min.

引用

页码：883 / 888

页数：6

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