Kinetic Study on Oxidation of 1-(3,4-dimethoxyphenyl)ethanol Catalyzed by Copper(II) Complexes

Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (01): 27-32. Previous Articles Next Articles

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金属铜配合物催化氧化1-(3,4-二甲氧基苯)乙醇的动力学研究

曾伟鹏，李小红，杜娟，李建梅，张平，胡常伟，孟祥光

(四川大学化学学院绿色化学与技术教育部重点实验室成都 610064)

投稿日期:2009-04-02 修回日期:2009-06-08 发布日期:2009-09-01
通讯作者: 孟祥光 E-mail:mengxgchem@163.com
基金资助:
国家自然科学基金项目(No.: 20107004;20803050 )和国家重点基础研究发展计划（973）（No.:2007CB210203）

Kinetic Study on Oxidation of 1-(3,4-dimethoxyphenyl)ethanol Catalyzed by Copper(II) Complexes

Zeng Weipeng, Li Xiaohong, Du Juan, Li Jianmei, Zhang Ping, Hu Changwei, Meng Xiangguang

(College of Chemistry, Sichuan University, Key Laboratory of Green Chemistry and Technology, Ministry of Education, Chengdu 610064)

Received:2009-04-02 Revised:2009-06-08 Published:2009-09-01
Contact: Xiang-Guang Meng E-mail:mengxgchem@163.com

Abstract

1-(3,4-Dimethoxyphenyl)ethanol (DMPE) was synthesized and used as the model of lignin. Kinetics of the reaction of DMPE with hydrogen peroxide catalyzed by three copper(II) complexes was studied in phosphoric acid buffer solution at 40 ℃. A kinetic model of catalytic oxidation of DMPE was suggested, and the kinetic parameters k₂ and K_m under different conditions were obtained. The catalytic efficiency of the copper(II) complexes increased with increasing pH. The complex with the electron conjugated ligand showed the best catalytic activity on the oxidation reaction. A possible catalytic mechanism of the oxidation of DMPE was proposed and discussed in detail.

Key words: 1-(3,4-dimethoxyphenyl)ethanol, copper(II) complex, hydrogen peroxide, kinetics, lignin

Cite this article

CENG Wei-Feng, LI Xiao-Gong, DU Juan, LI Jian-Mei, ZHANG Beng, HU Chang-Wei, MENG Xiang-Guang. Kinetic Study on Oxidation of 1-(3,4-dimethoxyphenyl)ethanol Catalyzed by Copper(II) Complexes[J]. Acta Chimica Sinica, 2010, 68(01): 27-32.

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金属铜配合物催化氧化1-(3,4-二甲氧基苯)乙醇的动力学研究

Kinetic Study on Oxidation of 1-(3,4-dimethoxyphenyl)ethanol Catalyzed by Copper(II) Complexes

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