Effects of Cationic Surfactant Cetylpyridine Bromide Micelle upon the Hydrolysis of 2,4-Dinitrochlorobenzene

Abstract

Abstract: The Ieaction between hydroxide ion and 2, 4-dinitrochlorobenzene in water wascatalyzed by cationic micelles of cetylpyridine bromide (CPB). The rate constant first increased sharply. then remained relatively constant as the concentration of CPBincreased.The kinetic form can be interpreted quantatively in terms of incorporation of substrate andhydroxide ion into the eationic micelles. Increasing the hydroxide ion concentration decreasedthe second-order rate constant of the micellar-catalyzed hydrolysis. The rate enhancement ismore pronounced in CPBthan in cetyltrinlethylammonium1 bromide system. The difference ofthe effects of the two cationic micelles has also been discussed.

Key words: Micelle catalysts, 2,4-Dinitrochlorobenzene, Cetylpyridine bromide

CLC Number:

O643

TrendMD:

SHEN Ji-Jing, ZHAO Zhen Guo, MA Ji-Ming. Effects of Cationic Surfactant Cetylpyridine Bromide Micelle upon the Hydrolysis of 2,4-Dinitrochlorobenzene[J]. Chem. J. Chinese Universities, 1997, 18(9): 1527.

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Effects of Cationic Surfactant Cetylpyridine Bromide Micelle upon the Hydrolysis of 2,4-Dinitrochlorobenzene

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