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Citation: SU Hao, YANG Chun. Selective Oxidation of Benzyl Alcohol Catalyzed by Polyoxometalates:A Green Recyclable Catalytic System with High Performance[J]. Chinese Journal of Applied Chemistry, ;2014, 31(8): 958-964. doi: 10.3724/SP.J.1095.2014.30534 shu

Selective Oxidation of Benzyl Alcohol Catalyzed by Polyoxometalates:A Green Recyclable Catalytic System with High Performance

SU Hao ,
YANG Chun ^,

1.
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China

Corresponding author: YANG Chun,
Received Date: 30 October 2013
Available Online: 15 January 2014
Fund Project:

Several triethylamine(TEA) salts of heteropolyacids were synthesized by acid-base reaction using Keggin-type heteropolyacids and TEA as raw materials. These salts were used to catalyze the oxidation of benzyl alcohol to benzaldehyde in water with 30% aqueous hydrogen peroxide as oxidant without employment of phase transfer catalyst with long chain. These salts possess higher catalytic activities or selectivities than the corresponding acids.[TEAH]H₂PW₁₂O₄₀ exhibits the best performance of all catalysts. Under the optimum reaction conditions,the conversion of benzyl alcohol and the selectivity of benzaldehyde is over 99.5% and ~100%,respectively,over [TEAH]H₂PW₁₂O₄₀. After the reaction,the catalyst can be isolated and used for next oxidation cycle,and the activity and selectivity are maintained in recycle. In view of the fact that water is used as reaction medium instead of organic solvent,this system is effective and green for selective oxidation of benzyl alcohol.
- benzyl alcohol,
- selective oxidation,
- polyoxometalates,
- catalysis
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