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Citation: XU Ming-Tao, ZHAO Liang-Liang, ZHU Yan-Jing, TONG Ying, CHEN Qing-Niao, YANG Bai-Lin, WANG Kang-Bin, YANG Yuan-Fa. Comparasion of Different Catalysts on Phenol Hydroxylation[J]. Chinese Journal of Applied Chemistry, ;2010, 27(12): 1419-1423. doi: 10.3724/SP.J.1095.2010.00039 shu

Comparasion of Different Catalysts on Phenol Hydroxylation

a. Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004;
b. Zhejiang Xianju Pharmaceutical Co. Ltd., Xianju

Received Date: 18 January 2010
Revised Date: 15 April 2010

Fe₂O₃,heteropoly salt and Fe/ZrO₂ exhibited high catalytic activity toward phenol hydroxylation using H₂O₂ as oxidant. A rapid hydroxylation of phenol was observed after an induction period in the hydroxylation of phenol catalyzed by Fe₂O₃;however,a slow hydroxylation of phenol was observed and the induction period disappeared in the same system catalyzed by heteropoly salt or Fe/ZrO₂. The results suggest that,first,an induction period in hydroxylation of phenol is related to the formation of active species Fe³⁺ and Fe²⁺ from Fe₂O₃; and second,the slow hydroxylation is related to the surface catalysis reaction on heteropoly salt or Fe/ZrO₂,leading to the disappearance of the induction period.
- phenol hydroxylation,
- Fe₂O₃,
- induction period,
- heteropoly salt,
- ·OH free radical
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