Non-Metallic Ketone Compounds Catalyzed Selective Epoxidation of Styrene with Dry Air

被引：8
|
作者：
Lu, X. -H. [1 ,2 ]
Xu, G. [1 ,2 ]
Tang, Z. -R. [1 ,2 ]
Xia, Q. -H. [1 ,2 ]
Zhan, H. -J. [3 ]
Zhang, Q. [1 ,2 ]
Pang, T. [1 ,2 ]
机构：
[1] Hubei Univ, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Wuhan 430062, Peoples R China
[2] Hubei Univ, Sch Chem & Chem Engn, Wuhan 430062, Peoples R China
[3] Jingchu Univ Technol, Jingmen 448000, Peoples R China
来源：
CATALYSIS LETTERS | 2009年 / 132卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Aerobic epoxidation of styrene; Ketone catalyst; Air as the oxidant; Epoxidation; ASYMMETRIC EPOXIDATION; MOLECULAR-OXYGEN; OXIDATION; DIOXIRANE; COMPLEXES; OZONE; H2COO;
D O I：
10.1007/s10562-009-0117-6
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：
Two non-metallic ketone catalysts resulted from fructose were first applied in the epoxidation of styrene with dry air to achieve considerably encouraging results, in which no any transition metal ion/oxide was involved. Ketone 1 was highly active, with the styrene conversion of 78.1 mol% and the epoxide selectivity of 92.0% at 363 K in 5 h. The poorer activity of ketone 2 was possibly associated with stronger steric hindrance of intermediate coordinative state. The occurrence of styrene epoxidation with dry air over the ketone could involve the coordination among solvent DMF, oxygen and ketone to form the peroxy ketone intermediate.
引用
收藏
页码：487 / 491
页数：5
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