A new strategy for the selective oxidation of alcohols catalyzed by a polyoxometalate-based hybrid surfactant in biphasic systems

A hybrid surfactant with catalytic oxidation activity and interfacial activity was prepared via a combination of the polyoxometalate [PW 11 O 39 ] 7− anion and an alkoxysilane by a covalent bond. The organic-inorganic hybrid surfactant can effectively emulsify an alcohol/water biphase system, promot...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-03, Vol.55 (25), p.3598-361
Main Authors: Bai, Xueli, Huang, Xin, Wen, Liang, Song, Nianze, Zhang, Jian, Zhang, Yue, Zhao, Yongxiang
Format: Article
Language:English
Subjects:
Alcohol
Alcohols
Catalysis
Catalysts
Catalytic oxidation
Covalent bonds
Hybrid systems
Infrared spectroscopy
NMR
Nuclear magnetic resonance
Oxidation
Particle size distribution
Surfactants
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Summary:A hybrid surfactant with catalytic oxidation activity and interfacial activity was prepared via a combination of the polyoxometalate [PW 11 O 39 ] 7− anion and an alkoxysilane by a covalent bond. The organic-inorganic hybrid surfactant can effectively emulsify an alcohol/water biphase system, promote the alcohol oxidation reaction by increasing the oil-water interface area, and exhibit better catalytic oxidation activity than the homogeneous polyoxometallate. The demulsification of the emulsion can be achieved by increasing the temperature, and the catalyst can be recycled several times with no apparent loss of catalytic performance. At room temperature, 18C-silyl-POM makes a reaction system form an emulsion to increase the interface area and improve the catalytic performance.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc09628g