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Citation: ZHANG Xian-Ling, WANG Ai-Ju, ZHANG Xin-Sheng, XU Ping. Critical Micelle Concentration of Tetraethylammonium Hydroxide Aqueous Solution[J]. Chinese Journal of Applied Chemistry, ;2007, 24(4): 374-377. shu

Critical Micelle Concentration of Tetraethylammonium Hydroxide Aqueous Solution

1.
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237

Corresponding author: ZHANG Xin-Sheng,
Received Date: 28 June 2006
Available Online: 28 September 2006
Fund Project: 国家自然科学基金资助项目(20376020) (20376020)厦门大学固体表面物理化学国家重点实验室开放课题(200406) (200406)

The first and second critical micell concentrations of the tetraethylammonium hydroxide aqueous solution obtained by conductivity method were 0.52 mmol/L and 38.0 mmol/L.Electrochemical behavior of tetraethylammonium hydroxide aqueous solution was investigated by cyclic voltammetry(CV) using a Pt working electrode and a oxidative peak under diffusion control was found.The diffusion coefficients of tetraethylammonium hydroxide was determined by potential-step chronocoulometry(CC),and the first and second critical micell concentrations obtained were 0.52 mmol/L and 41.0 mmol/L.We can conclude that the critical micell concentrations of tetraethanolammonium hydroxide aqueous solution are 0.52 mmol/L and 39.5 mmol/L.The results show that the conductivity method and chronocoulometry are all suitable for determining the critical micell concentrations of surfactants.
- tetraethylmmionium hydroxide,
- critical micelle concentration,
- conductivity method,
- chronocou-lometry
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