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이온교환수지에 의한 촉매반응-페놀과 초산의 에스테르화-

Catalysis by Ion Exchange Resin-Esterification of Phenol and Acetic Acid-

HWAHAK KONGHAK, December 1980, 18(6), 461-468(8), NONE
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Abstract

성질이 서로 다른 두 macroreticular수지를 촉매로 이용하여 페놀과 초산의 에스테르화를 회분식 반응기에서 액상으로 행하였다.
산성 이온교환기 치환에 따른 반응속도 감소와 초기에 첨가된 물의 inhibition이 관찰되어 문헌의 다른 수지 촉매 반응때와 같은 작용이 일어남을 확인하였다.
Macropore 물질전달 영향이 없는 것으로 나타난 실험에서 얻어진 초기반응속도 데이터를 해석하기 위해 이에 여러 인자들을 고려한 반응속도식을 설정하였다. 이에 포함되는 파라미터 값들을 구하여 평형분포의 영향, 페놀의 gel 내 침투, 고유 반응성의 변화에 대한 고찰을 하였다.
온도에 따른 영향이 두 수지에서 다르게 나타나 gel의 반응 참여도를 뒷받침해 주었으며 반응 활성화에너지가 구해졌다.
The liquid phase esterification of phenol and acetic acid was performed in a batch reactor using two types of macroreticular ion exchange resin catalysts i.e., Amberlyst XN-1010 and Amberlyst 15.
Consistent with previous studies, the replacement of -SO3H with -SO3Na and the addition of water reduced the reaction rates.
Experimental data on the initial reaction rate with negligible mass transport resistance in the macropore were analyzed by introducing possible system parameters, from which the effects of distribution coefficient, permeability inside the microsphere and intrinsic reacton mechanism on the reaction system are discussed.
The effect of temperature on the reaction rate was explained by the different rate of increase in the gel permeability for each resin, and the activation energy could be estimated.

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