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
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
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