5,7 -二溴-8-羟基喹啉锰配合物催化H<sub>2</sub>O<sub>2</sub> 选择氧化乙苯

引用本文: 卢春丽, 伏再辉, 刘亚纯, 刘凤兰, 秦金纬, 何乡陵, 尹笃林. 5,7 -二溴-8-羟基喹啉锰配合物催化H₂O₂ 选择氧化乙苯[J]. 物理化学学报, 2010, 26(10): 2705-2710. doi: 10.3866/PKU.WHXB20100936 shu

Citation: LU Chun-Li, FU Zai-Hui, LIU Ya-Chun, LIU Feng-Lan, QIN Jin-Wei, HE Xiang-Ling, YIN Du-Lin. Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes[J]. Acta Physico-Chimica Sinica, 2010, 26(10): 2705-2710. doi: 10.3866/PKU.WHXB20100936 shu

5,7 -二溴-8-羟基喹啉锰配合物催化H₂O₂ 选择氧化乙苯

基金项目:
国家自然科学基金(20873040, 20573035)资助项目 (20873040, 20573035)

摘要:

设计合成了5,7 -二溴-8-羟基喹啉锰的四齿和六齿配合物(Q₂Mn^II和Q₃Mn^III), 并用傅里叶变换红外(FT-IR) 光谱对两个配合物进行了表征. 以醋酸铵和醋酸为助剂, 丙酮-水作溶剂, 两个锰配合物在室温20^oC下能高选择性催化双氧水氧化乙苯制苯乙酮的反应,Q₃Mn^III比Q₂Mn^II具有更高的催化活性和选择性. 在优化的反应条件下, 乙苯转化率达27%, 苯乙酮的选择性>95%; 而且催化剂稳定性良好, 可循环使用三次.

关键词:

English

Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes

1.
Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research of Ministry of Education of China, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P. R. China
Received Date: 17 February 2010
Available Online: 27 September 2010
Fund Project:
国家自然科学基金(20873040, 20573035)资助项目

Abstract:

Two 5,7-dibromo-8-quinolinolato manganese complexes in tetradentate (Q₂Mn^II) and hexadentate (Q₃Mn^III) modes were prepared and then characterized by Fourier transform infrared (FT-IR) spectrometry. We found that both Mn complexes, together with NH₄OAC and HOAc, efficiently catalyzed the oxidation of ethylbenzene to acetophenone by hydrogen peroxide in an acetone -water medium at 20 ^oC. Q₃Mn^IIIshowed much higher catalytic activity for this reaction thanQ₂Mn^II, affordinga 27% ethylbenzene conversion and more than 95% selectivity for acetophenone under optimum conditions.Q₃Mn^IIIwas reused three times without significant deactivation, indicating od stability.

Key words:

5,7-Dibromo-8-guinolinolato Mn(III) complex
/ Hexadentate mode
/ Ethylbenzene
/ Acetophenone
/ Selective oxidation

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

5,7 -二溴-8-羟基喹啉锰配合物催化H₂O₂ 选择氧化乙苯

English

Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes

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5,7 -二溴-8-羟基喹啉锰配合物催化H2O2 选择氧化乙苯

English

Selective Oxidation of Ethylbenzene with Hydrogen Peroxide Catalyzed by 5,7-Dibromo-8-quinolinolato Manganese Complexes

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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通讯作者: 陈斌, bchen63@163.com

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