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China Surfactant Detergent & Cosmetics ›› 2016, Vol. 46 ›› Issue (4): 204-207.doi: 10.13218/j.cnki.csdc.2016.04.005

• Developmentandapplicatio • Previous Articles     Next Articles

Synthesis of betaine surfactant and its micellar catalysis action on alkaline hydrolysis of acetic esters

ZHOU Yang,PAN Zhong-wen,CHEN Geng,SUN Shuo   

  1. School of Chemistry and Chemical Engineering,Anhui University,Hefei,Anhui 230601,China
  • Online:2016-04-22 Published:2016-04-22

Abstract: Two kinds of betaine surfactant (C-12 and C-16) were synthesized in laboratory.Alkaline hydrolysis of ethyl acetate and amyl acetate,under 25 ℃ in micellar solution of C-12 and C-16 separately was studied in accordance with electric conductivity method.In case without use of surfactant,the hydrolysis rate constant (k) of ethyl acetate and amyl acetate is 0.111 and 0.082 L/(mol·s) respectively.In case surfactant is used and the concentration of surfactant is 8×10-4 mol/L,the k of ethyl acetate and amyl acetate to C-12 is 0.183 and 0.112 L/(mol·s) respectively,and the corresponding to C-16 is 0.226 and 0.135 L/(mol·s) respectively.The results indicated that C-12 and C-16 can catalyze the hydrolysis of acetates.Under same conditions,the rate of hydrolysis for ethyl acetate is faster than amyl acetate.

Key words: betaine surfactant, acetate, hydrolysis, micellar catalysis

CLC Number: 

  • TQ423.3