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Tetrabutylammonium Hydrogen Sulfate 에서 O2 기체에 의한 Diphenylmethane 의 산화반응
Oxidation of Diphenylmethane by O2 Gas with Tetrabutylammonium Hydrogen Sulfate
박상욱 , 박대원 , 서동수 , 허남환 ( Sang Wook Park , Dae Won Park , Dong Soo Suh , Nam Hwan Heo )
화학공학 vol. 33 iss. 3 318-327(10pages)
UCI I410-ECN-0102-2008-570-001805211

상이동촉매 tetrabutylammonium hydrogen sulfate의 벤젠 용액과 NaOH 수용액의 불균일계에서 상이동촉매의 평형실험과 25℃, 대기압에서 준 회분식 교반조 흡수기를 사용하여 O₂에 의한 diphenylmethane의 산화반응실험을 행하였다. 평형실험으로부터 QX와 QOH의 평형상수 K₁과 K₂ 및 QOH와 diphenylmethane의 평형상수 K₃를 측정하였으며, 이들 값은 각각 2.01×10^(-6) ㏖/ℓ, 2.5×10⁴ℓ/㏖, 3.0 ㏖/ℓ이었다. O₂의 초기흡수속도로부터 얻어진 반응촉진계수값을 사용하여 산화반응의 반응속도정수 k, 1.01ℓ/㏖ s을 구하였다. 기-액-액 불균일계에서 상이동촉매에 의한 반응메카니즘을 경막설에 의한 화학반응이 수반한 물질전달기구로서 해석하였다.

The oxidation of diphenylmethane by oxygen was carried out in a liquid-liquid heterogeneous system with benzene solution of tetrabutylammonium hydrogen sulfate as a phase transfer catalyst and aqueous solution of sodium hydroxide as a base using a stirred absorber at 25℃ and an atmospheric pressure. The equilibrium constants, K₁, K₂, K₃, between the intermediates of catalyst, base, and reactant were obtained from equilibrium experiment, and their values, 2.01×10 ^(-6) ㏖/ℓ, 2.5×10⁴ℓ/㏖ and 3.0 ㏖/ℓ, respectively. The reaction rate constants of oxidation of diphenylmethane with oxygen was obtained from the experimental enhancement factor of initial rate of oxygen absorption, and its value 1.01 ℓ/㏖ s. The reaction mechanism by the phase transfer catalyst at the interface of the gas-liquid-liquid heterogeneous system was analyzed by mass transfer mechanism with chemical reaction using the film theory.

[자료제공 : 네이버학술정보]
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