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Aliquat 336에 의한 액 - 액 불균일계에서 n - butyl acetate 의 가수분해 및 상전이 촉매의 물질전달
박상욱,문진복,박대원,신정호 ( Sang Wook Park,Jin Bok Moon,Dae Won Park,Jeung Ho Shin ) 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1
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 36 ㎥/kmol·s at 298 K, which was about 100 times greater than that of alkaline hydrolysis in the aqueous phase without using a catalyst.
Aliquat 336의 분배 , 해리 평형 및 물질전달
박상욱,문진복,박대원,신정호 ( Sang Wook Park,Jin Bok Moon,Dae Won Park,Jeung Ho Shin ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.5
The distribution and dissociation equilibria of tricaprylmethyl ammonium chloride(Aliquat 336; Q^+Cl^-) were measured for the system of organic phase(toluene, n-butyl acetate)-aqueous phase(water, NaCl, NaOH, Na₂S₂O₄). 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. The aqueous-phase mass transfer of Q^+Cl^- in the toluene-water system and toluene-NaOH aqueous solution system could be quantitatively explained as that with an instantaneous reversible dissociation reaction.
박상욱,문진복,신정호,박대원,김종현 ( Sang Wook Park,Jin Bok Moon,Jeung Ho Shin,Dae Won Park,Jong Hyeon Kim ) 한국공업화학회 1993 공업화학 Vol.4 No.1
교반기를 사용하여 n-butyl acetate의 알카리 가수분해반응의 액-액 불균일계에서 n-butyl acetate의 총괄물질전달속도를 측정하여 실험변수와의 관계를 고찰하고, 화학반응을 수반한 물질전달기구를 경막설에 적용하여 용질에 대한 확산방정식의 근사해로부터 구한 n-butyl acetate의 반응촉진계수의 이론값과 측정값을 비교하여 물질전달계수를 구하였다. 이로부터 분산용액의 액적 면적을 산출할 수 있었다. The rates of overall mass transfer of n-butyl acetate in the alkaline hydrolysis of n-butyl acetate were measured by using a mechanically agitated vessel in order to get the relationship between the mass transfer rates and experimental variables. The interfacial area between liquid-liquid heterogeneous phases could be obtained by comparing the theoretical values of reaction enhancement factor from an approximated solution of a diffusion equation based on the film theory with the experimental data.
막반응기에서 Aliquat 336 에 의한 n - butyl acetate 의 알칼리 가수분해반응 1. 이론적 고찰
박상욱,문진복,정영훈,박대원,신정호 ( Sang Wook Park,Jin Bok Moon,Young Hoon Jung,Dae Won Park,Jung Ho Shin ) 한국화학공학회 1994 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.32 No.2
A theoretical model about a phase transfer catalyzed liquid-liquid heterogeneous reaction system in a hydrophobic membrane reactor was developed by the chemical-diffusion equations from the mass transfer mechanism with the approximated pseudo 1st-order reaction, and the performance of the membrane reactor was analyzed with the interaction of mass transfer with chemical reaction from this simulation.
막반응기에서 Aliquat 336 에 의한 n - butyl acetate 의 알칼리 가수분해반응 2 . 실험적 고찰
박상욱,문진복,정영훈,박대원,신정호 ( Sang Wook Park,Jin Bok Moon,Young Hoon Jung,Dae Won Park,Jung Ho Shin ) 한국화학공학회 1994 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.32 No.2
Concentrations of unreacted n-butyl acetate in the alkaline hydrolysis of n-butyl acetate by Aliquat 336 were measured with a porous polypropylene membrane reactor, and compared with those predicted from the theoretical model based on the mass transfer mechanism with chemical reaction in the organic membrane layer. The membrane reactor was an ideal mixed reactor, the reaction of intermediate of catalyst in the aqueous phase was an instantaneous reversible reaction, and the reaction of n-butyl acetate in the membrane layer was pseudo 1st-order reaction.