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Search / Korean Journal of Chemical Engineering
HWAHAK KONGHAK,
Vol.31, No.1, 107-117, 1993
Aliquat 336에 의한 액-액 불균일계에서 n-butyl acetate의 가수분해
Hydrolysis of n-Butyl Acetate Using Aliquat 336 in the Liquid-Liquid Interface and Mass Transfer of Phase Transfer catalyst
박상욱, 문진복, 박대원, 신정호
개량된 Lewis cell을 사용하여 상전이 촉매 tricaprylmethyl ammonium chloride(Aliquat 336; Q+Cl-)의 화학반응을 수반한 물질전달속도의 촉진계수를 측정하여 경막설을 보정한 Leveque 모델로부터 구한 이론값과 비교하여 Q+Cl-의 순간 가역 해리반응을 수반한 물질전달속도를 정량적으로 설명하였으며, n-butyl acetate 가수분해 반응에서 물질전달을 포함한 상전이 촉매에 의한 반응기구로서 확산-반응 모델을 제안하여 총괄반응속도의 측정치와 비교하였으며, 이로부터 구한 반응속도상수는 25α에서 36m3/kmolㆍs이며 촉매를 사용하지 않은 경우보다 100배 정도 큰 값이었다.
Constants of the distribution and dissociation equilibria of tricaprylmethyl ammonium chloride(Aliquat 336;Q+Cl-) were measured for the organic phase(toluene, n-butyl acetate)-aqueous phase(water, NaCl, NaOH) system. The enhancement factors of Q+Cl- were measured with a Lewis cell, and compared with those predicted from the theoretical model based on the film theory corrected by the Leveque model. A diffusion-reaction model was proposed to explain the mechanism of n-butyl acetate hydrolysis with a phase transfer catalyst(Aliquat 336), and the overall reaction rates observed were compared with those calculated by the proposed model. The reaction rate constant evaluated by fitting the rate data to model prediction was 36m3/kmolㆍs at 298K, which was about 100 times greater than that of alkaline hydrolysis in the aqueous phase without using a catalyst.
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[Cited By]
  1. Park SW, Park DW, Lee SS, Yang SS, Baek JJ, HWAHAK KONGHAK, 34(2), 215, 1996
  2. Park SW, Park DW, Lee SS, Yang SS, Baek JJ, HWAHAK KONGHAK, 34(2), 223, 1996
  3. Park SW, Park DW, Suh DS, Heo NH, HWAHAK KONGHAK, 33(3), 318, 1995
  4. Park SW, Moon JB, Jung YH, Park DW, Shin JH, HWAHAK KONGHAK, 32(2), 222, 1994
  5. Park SW, Moon JB, Jung YH, Park DW, Shin JH, HWAHAK KONGHAK, 32(2), 233, 1994
  6. Park SW, Suh DS, HWAHAK KONGHAK, 32(5), 700, 1994
  7. Park SW, Moon JB, Hwang KS, Journal of the Korean Industrial and Engineering Chemistry, 5(2), 230, 1994
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