| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.2765 |
| 발표분야 |
이온성 액체의 촉매적 응용 국제 심포지엄(International Symposium on Catalytic Application of Ionic Liquids) |
| 제목 |
Catalyzed Dimerization of Bicyclo[2.2.1]hepta-2,5-diene by Fe-Containing Ionic Liquids |
| 초록 |
Fe-containing imidazolium-based ionic liquids (ILs) were highly effective for the dimerization of bicyclo[2.2.1]hepta-2,5-diene (2,5-norbornadiene, NBD) in the presence of diethylaluminum chloride (DEAC). Fe-containing ILs produced hexacyclic endo-endo NBD dimer (Hnn) in high yield and selectivity, whereas FeCl3 yielded large amounts of side products. By employing these catalysts, the use of expensive phosphanes was avoided and the required amount of reducing agent (DEAC) was greatly reduced. The yield and selectivity of Hnn were affected by the degree of reduction of Fe(III) compounds by DEAC to Fe(II) species as determined by X-ray photoelectron spectroscopy. Higher yield of Hnn was obtained with the catalytic system producing larger amounts of Fe(II) species. Theoretical calculation and experimental results support that Fe(II) is the active species for the dimerization. The roles of [BMIm]Cl are believed to promote the generation of the active species through the formation of easily reducible [BMIm]FexCl3x+1 (x = 1 or 2) or [BMIm]2FeCl4, and to stabilize the resulting active species. |
| 저자 |
이제승, 김훈식, 정민석
|
| 소속 |
경희대 |
| 키워드 |
Ionic liquid; FeCl3; FeCl2; Dimerization; 2; 5-Norbornadiene
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
