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그물 구조상 수지촉매를 이용한 MTBE 합성 반응

Synthesis of MTBE over Macroreticular Resin Catalysts

HWAHAK KONGHAK, December 1987, 25(6), 607-613(7), NONE
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Abstract

성질이 매우 다른 두가지 형태의 이온교환수지촉매 Amberlyst 15와 Amberlyst XN 1010을 이용하여 메탄올과 이소-부틸렌의 기상 부가반응을 행하였다. 이때 실험조건은 외부 물질전달 저항과 거시 세공에서 확산 저항이 무시되는 범위였다.
반응속도 결과는 평형분포계수를 고려한 균일상 모델과 잘 일치함을 보여 주고 있다. 또한 활성기인 -SO3H기를 -SO3Na로 부분적으로 치환하여 행한 실험에서 반응속도는 수지내의 활성기 농도에 대해 비선형적인 의존관계가 있는 것으로 관찰되었다. 또한 미세입자 표면의 활성기와 미세입자 내부의 활성기간의 활성도 차이가 존재함을 알 수 있었고 이를 실제 산세기의 개념에 의해 해석하였다.
The vapor phase addition of methanol to iso-butylene was carried out in a differential reactor packed with two types of macroreticular ion exchange resin catalyst, Amberlyst 15 and Amberlyst XN 1010. External mass transfer resistance and macropore diffusion resistance could be neglected over the range studied. The experimental data on the reaction rates could be correlated fairly well with the homogeneous model in which equilibrium distribution effect was considered. Catalytically active -SO3H groups were diluted by partial replacement with -SO3Na groups, and from which it was investigated that the reaction rates were nonlinearly dependent on the acid concentration in the resin. The functional groups on the surface of the microparticles seemed to have a lower activity than those within the microparticles.

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