Epoxidation of styrene over Fe(Cr)-MIL-101 metal-organic frameworks

被引：68
|
作者：
Sun, Jian [1 ]
Yu, Guangli [2 ]
Huo, Qisheng [2 ]
Kan, Qiubin [1 ]
Guan, Jingqi [1 ]
机构：
[1] Jilin Univ, Coll Chem, Changchun 130023, Peoples R China
[2] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 72期
基金：
中国国家自然科学基金;
关键词：
HETEROGENEOUS CATALYST; SELECTIVE OXIDATION; AEROBIC EPOXIDATION; SALEN COMPLEXES; CARBOXYLATE; ALKENES; MIL-101; OLEFINS; ACIDITY; SBA-15;
D O I：
10.1039/c4ra05402d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Epoxidation of styrene is one of the key reactions in organic synthesis. In this paper, we investigated the effect of different metal ions in MIL-101 metal-organic framework on styrene epoxidation using various oxidants such as air, H2O2 and TBHP. For the aerobic epoxidation of styrene, Fe-MIL-101 and Cr-MIL-101 presented good styrene conversion (87.2 vs. 65.5%) and epoxide selectivity (54.4% vs. 37.7%) using air as the oxidant. The styrene epoxidation activity for the different oxidants over Fe-MIL-101 was as follows: air > TBHP > H2O2, while that over Cr-MIL-101 showed a different trend: H2O2 > air > TBHP. Moreover, the selectivity to styrene oxide for the different oxidants was similar over the two catalysts: TBHP > air > H2O2. The study of the effect of various solvents revealed that CH3CN is the optimal solvent for the aerobic epoxidation of styrene. Furthermore, the catalysts could be reused three times without any significant loss in catalytic activity.
引用
收藏
页码：38048 / 38054
页数：7
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