Highly Selective Oxidation of Cyclohexene via Trivacant Keggin-type Phosphotungstate as Catalysts

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (3): 783.

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Highly Selective Oxidation of Cyclohexene via Trivacant Keggin-type Phosphotungstate as Catalysts

AN Wen-Jia^1,2, XU Lin^1*

1. Institute of Polyoxometalate Chemistry, Department of Chemistry, Northeast Normal University, Changchun 130024, China;
2. Panyu Entry\|Exit Inspection Quarantine, Panyu 511400, China

Received:2010-10-18 Revised:2011-01-04 Online:2011-03-10 Published:2011-02-23
Contact: XU Lin E-mail:linxu@nenu.edu.cn
Supported by:
国家自然科学基金(批准号: 20971019)资助.

Abstract

Abstract: The oxidation of cyclohexene with 30% hydrogen peroxide was catalyzed by trivacant Keggin-type polyoxometalates tetra-butylammonium salts [A-α-PW9O34]9- and [(FeШ(OH2)2)3(A-α-PW9O34)2]9-. The effects of reaction conditions such as molar ratio of cyclohexene to H2O2 , reaction time and catalyst amount on the catalyst activity were investigated. The catalyst [(C4H9)4N]9[A-α-PW9O34] showed a high selectivity (≥ 99 % ) for cyclohexene oxide with the cyclohexene conversion of 55 %. The catalyst [(C4H9)4N]9[(FeШ(OH2)2)3(A-α-PW9O34)2] showed a cyclohexene conversion of 17 % and a 2-cyclohexene-1-one selectivity of 99 % .

Key words: cyclohexene, oxidation, trivacant Keggin-type Polyoxometalate, reaction-controlled phase transfer

CLC Number:

0643.3

TrendMD:

AN Wen-Jia, XU Lin*. Highly Selective Oxidation of Cyclohexene via Trivacant Keggin-type Phosphotungstate as Catalysts[J]. Chem. J. Chinese Universities, 2011, 32(3): 783.

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Highly Selective Oxidation of Cyclohexene via Trivacant Keggin-type Phosphotungstate as Catalysts

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