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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 CTF-based heterogenized Al-Co bimetallic catalyst for the ring-expansion carbonylation of epoxide to β-lactone

등록일
2016년 9월 1일 15시 11분 18초
접수번호
2399
발표코드
INOR.O-8 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 10분
발표형식
구두발표
발표분야
무기화학 - Oral Presentation for Graduate Scholars in Inorganic Division
저자 및
공동저자
R.SENKUTTUVAN, PIAO LONGHAI1, 박규순*, 윤성호2,*
국민대학교 화학과, Korea
1공주대학교 화학과, Korea
2국민대학교 생명나노화학과, Korea
β-lactone is an important class of intermediates for the ring-opening polymerization to poly(β-hydroxyalkanoates), a class of biodegradable and biocompatible polyesters2. Although an efficient catalytic system has been reported for conversion of epoxide to lactone3, a easy way to separate the product and recycling the catalyst is essential for industrial process. Such execution can be attained by replacing homogeneous catalyst with heterogeneous system. The [bpy-CTF-Al(OTf)2][Co(CO)4] heterogeneous catalyst has been synthesized for the first time by immobilization of [Al(OTf)2]+ and [Co(CO)4]- ions into the covalent triazine frameworks (CTFs). The heterogenized catalyst has been characterized using various spectroscopic techniques including Brunauer-Emmett-Teller (BET) surface area, pore size distribution, inductively coupled optical emission spectroscopy (ICP-OES), X-ray photoelectron spectroscopy (XPS) and IR spectroscopy. This heterogenized catalyst efficiently catalyzes the propylene oxide (PO) to β-lactone with over 90% selectivity, which is the highest value reported to date. The catalyst can be separated from the reaction mixture by simple filtration and recycled three times while maintaining 70% selectivity in each run, which makes it most attractive for industrial applications.

Acknowledgement: C1 Gas Refinery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2015M3D3A1A01064879).

Reference:
1. Sudesh, K.; Abe, H.; Doi, Y. Prog. Polym. Sci. 2000, 25, 1503-1555.
2. Gerngross, T. U.; Slater, S. C. Sci. Am. 2000, 283(2), 36-41.
3. (a) Getzler, Y. D. Y. L.; Mahadevan, V.; Lobkovsky, E. B.; Coates, G. W. J. Am. Chem. Soc. 2002, 124, 1174-1175. (b) Kramer, J. W.; Lobkovsky, E. B.; Coates, G. W. Org. Lett. 2006, 8, 3709-3712.

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