| 학회 |
한국공업화학회 |
| 학술대회 |
2005년 가을 (10/28 ~ 10/29, 건국대학교) |
| 권호 |
9권 2호 |
| 발표분야 |
촉매 |
| 제목 |
Process for isomerizing 5-vinyl-2-norbornene in the presence of a basic catalytic system |
| 초록 |
The 5-ethylidene-2-norbornene (ENB), the third component for ethylene-propylene rubber, was obtained by the isomerization of 5-vinyl-2-norbornene (VNB) in the presence of a basic catalystic system consisting of an alkali metal hydride (MH) and a polyamine. The activity of the alkali metal hydride increased in the order of K＞Na＞Li. The structure of the polyamine also affects the isomerization reaction. Aliphatic 1,2-diamines such as ethylenediamine (EDA) produced ENB in high yields at room temperature, while monoamines, aromatic diamines and aliphatic diamines (1,3-and 1,4-diamines) were inert to the isomerization. The activity of the catalytic system was strongly related to the color of the solution. The purple active species showed a strong absorption band at=581nm in UV-VIS spectrum. A series of EPR experiments suggests that the isomerization of VNB proceeds through a radical mechanism. |
| 저자 |
이소영1, 이제승1, 김훈식2, 이상득1, 김홍곤1, 이창하3
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| 소속 |
1한국과학기술(연), 2경희대, 3연세대 |
| 키워드 |
isomerization; a basic catalytic system
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| E-Mail |
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