Highly efficient selective oxidation of sulfides to sulfoxides by montmorillonite-immobilized metalloporphyrins in the presence of molecular oxygen

被引:33
|
作者
Zhou, Xian-Tai [1 ]
Ji, Hong-Bing [1 ]
机构
[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Metalloporphyrins; Montmorillonite; Sulfide; Sulfoxide; CATALYZED ASYMMETRIC OXIDATION; HYDROGEN-PEROXIDE; MESO-TETRAPHENYLPORPHYRIN; BIOMIMETIC OXIDATION; IRON PORPHYRIN; MANGANESE III; EPOXIDATION; COMPLEXES; MECHANISM; METALS;
D O I
10.1016/j.catcom.2014.04.021
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
Highly efficient and selective oxidation of sulfides to sulfoxides with dioxygen catalyzed by cationic meso-tetrakis (1-methyl-4-pyridyl) (TM4PyP) metalloporphyrins immobilized into montmorillonite (MT) interlayer was achieved. Manganese (II) porphyrin (MnTM4PyP-MT) presented excellent activity for the oxidation of sulfides under ambient conditions. In the model oxidation, thioanisole was converted completely and the selectivity towards sulfoxide was up to 95%. This catalyst also showed high activity and selectivity for the most sulfides. The catalyst could be reused consecutively five times without significant loss of activity. (C) 2014 Elsevier B.V. All rights reserved.
引用
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页码:29 / 32
页数:4
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