Oxidation of dibenzothiophene catalyzed by Na2WO4 in a halogen-free ionic liquid

被引：15

作者：

Liu, Dan ^{[1
]}

Gui, Jianzhou ^{[1
]}

Ding, Jianfeng ^{[1
]}

Ma, JuanJuan ^{[1
]}

Lee, Juyoung ^{[2
]}

Sun, Zhaolin ^{[1
]}

机构：

[1] Liaoning Shihua Univ, Coll Chem & Mat Sci, Fushun 113001, Liaoning, Peoples R China

[2] Korea Res Inst Chem Technol, Div Green Chem, Taejon 305600, South Korea

来源：

REACTION KINETICS MECHANISMS AND CATALYSIS | 2011年 / 104卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ionic liquid; Desulfurization; Catalytic oxidation; Mechanism; DEEP DESULFURIZATION; ACID; DIESEL; EXTRACTION; SYSTEM; H2O2; OIL;

D O I：

10.1007/s11144-011-0347-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Deep removal of dibenzothiophene from model diesel under mild conditions (323 K) by oxidation with H2O2 was studied, using Na2WO4 center dot 2H(2)O in a halogen-free ionic liquid. The removal of DBT could reach 99.4% and the sulfur content would be reduced from initial 500 to 3 mu g/g, which can meet the standards of ultra-deep desulfurization. The model diesel after oxidation could be easily separated by simple decantation, demonstrated an effective and simple separation method. This catalytic system can be recycled five times without significant change on desulfurization results. The mechanism of the catalytic oxidation process was also proposed, a new ionic liquid-peroxytungstate complex was generated as the active species for supplying the active oxygen for desulfurization reaction.

引用

页码：111 / 123

页数：13

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