Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (2): 281.
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ZHAO Zhen-Guo, JIAO Tian-Shu
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Abstract: The micellar catalysis of cetyl pyridine chloride(CPC) and cetyl trimethyl ammonium chloride(CTAC) on the basic hydrolysis of 2,4-dinitrochlorobenzene(DNCB) was investigated and the effect of adding butyl alcohol on the activation energy of the basic hydrolysis under micellar catalysis was calculated. The results show that: (1) The hydrolysis is catalyzed obviously by CPC and CTAC micelles; (2) Addition of small amount of t-C4H9OH en-hances the catalytic effect of CPC micelle; (3) The activation energy of the hydrolysis reaction in the solution of cationic micelles is 49 kJ·mol-1, which is much lower than the value of 91 kJ·mol-1 in water, implying a difference between the mechanisms of hydrolysis reaction in water and in micellar solutions.
Key words: Micellar catalysis, 2,4-Dinitrochlorobenzene, Cationic surfactant, Activation energy of micellar catalysis
CLC Number:
O648.1
TrendMD:
ZHAO Zhen-Guo, JIAO Tian-Shu . Activation Energy of Micellar Catalysis on the Basic Hydrolysis of 2,4-Dinitrochlorobenzene[J]. Chem. J. Chinese Universities, 1999, 20(2): 281.
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http://www.cjcu.jlu.edu.cn/EN/Y1999/V20/I2/281