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다공성 스티렌-디비닐벤젠 공중합 수지 촉매에서 황산기 분포에 따른 MTBE 합성 및 분해반응의 특성 변화
Changes in Characteristics of MTBE Synthesis and Cracking with Sulfonic Acid Group Distributions in Porous Poly(styrene-co-divinylbenzene) Resin Catalysts
HWAHAK KONGHAK, February 1991, 29(1), 49-54(6), NONE
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Abstract
미세 겔입자 전체에 황산기가 균일하게 분포하는 다공성 스티렌-디비닐 벤젠 공중합 수지 촉매와 미세겔입장의 외부에 황산기가 주로 존재하는 수지 촉매를 제조하고, 이를 이용하여 MTBE 합성 및 분해반응을 수행하여 황산기 분포에 따른 반응 특성 변화를 관찰하였다. 황산기가 미세 겔입자의 외부 표면에 주로 존재하는 촉매(E형 촉매)의 반응합성 및 선택성이 균일하게 분표하는 촉매(A형 촉매)에 비해 높았으며, 이를 겔입자 내부로의 확산 저항 및 내부에 존재하는 황산기에서의 이차적인 반응 때문인 것으로 나타났다.
Sulfonated Poly(styrene-co-divinylbenzene) resin catalysts were prepared to have two dif-ferent types of sulfonic acid group distribution : the one having sulfonic acid group distributed uniformly throughout gelular microparticles, the othe having sulfonic acid group located mainly at the exterior surface of gelular microparticles. MTBE synthesis and cracking reaction were carried out on the cata-lysts, and the changes in characteristics of the reactions with sulfonic acid group distributions were investi-gated. The activity and selectivity of the reactions were always much higher on the catalyst having sulfonic acid group outside the gelular microparticles(type E catalyst) than on the one with uniform distribution(type A catalyst), and this was thought to be due to gelular microparticle diffusion limitation and secondary reaction on the sulfonic acid group within gelular particles.
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Klein J, Widdecke H, Bothe N, Makromol. Chem., 6, 211 (1984)
