Application of Composite Ionic Liquid in Electro-oxidation Activation of a C-H Bond

Authors

Zi-ying CHEN, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Qian-qian WU, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
Jian-qing ZHANG, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
Ying-hong ZHU, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;Follow
Chun-an MA, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;

Corresponding Author

Ying-hong ZHU(science@zjut.edu.cn);
Chun-an MA(science@zjut.edu.cn)

Abstract

In this paper, the ionic liquid/carbon nanotube composite material was prepared through modifying the ionic liquid 1-ethyl-3-methylimidazolium acetate to multi-walled carbon nanotubes. The electro-oxidation properties of p-methoxy toluene (p-MT) were studied using the composite as an electrolyte. The effects of scanning speed, temperature and substrate concentration were studied by cyclic voltammetry and chronoamperometry. The electrochemical kinetics of p-MT in this system was also studied. The results showed that the electrochemical oxidation of p-MT in the composite electrolyte solution was irreversible. The process was mainly controlled by diffusion, and the diffusion coefficient (D) was 7.69×10-10 cm2.s-1. Increasing the reaction temperature and the concentration of substrate could promote the electro-oxidation of the C-H bond to the corresponding aldehyde, and the selectivity of p-methoxybenzaldehyde (p-MBA) could improve to 95%. The electrolysis in one-pot was more efficiency and achieved better selectivity than that in the H-type.

Graphical Abstract

Keywords

the C-H bond oxidation, ionic liquid / nano composite material, Electro-oxidation activation, p-methoxybenzaldehyde

DOI Link

https://doi.org/10.13208/j.electrochem.160315

Publication Date

2017-02-28

Online Available Date

2016-05-18

Revised Date

2016-04-12

Received Date

2016-03-12

Recommended Citation

Zi-ying CHEN, Qian-qian WU, Jian-qing ZHANG, Ying-hong ZHU, Chun-an MA. Application of Composite Ionic Liquid in Electro-oxidation Activation of a C-H Bond[J]. Journal of Electrochemistry, 2017 , 23(1): 1-6.
DOI: 10.13208/j.electrochem.160315
Available at: https://jelectrochem.xmu.edu.cn/journal/vol23/iss1/1