초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 06일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Reusable Phase Transfer Catalyst, Graphene Oxide

2013년 9월 5일 16시 55분 53초
MAT.P-1118 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (수요일) 16:00~19:00
저자 및
김영민, 이효영1,*
성균관대학교 화학과, Korea
1성균관대학교 화학과, CSMM, Korea
Graphene and its derivatives have attracted great interest for use in composite materials and catalyst. We have successfully demonstrated that GO sheets can be functioned as phase transfer catalyst (PTC) for the Michael addition. As reactants, trans-β-nitrostyrene and 2,4-pentanedione and their derivatives were used, as well as differently sized alkali metal bases. GO was compared with 18-crown-6 ether (CE), the well-known conventional PTC. The GO promoted the formation of C?C bonds in the Michael adducts, giving short reaction time and high yield compared with CE. The used GO PTC could be recovered by simple filtering and washing and could be reused many times, while CE was difficult to recover. Furthermore, the GO PTC was effective with differently sized metal cation bases, while the CE worked effectively only with a specifically sized metal cation. And also, GO has the potential to provide an environment friendly, inexpensive and easy way to produce commercial products on a large scale. Thus, the GO PTC provides a novel method for the synthesis of new C?C bonds, and can be used in an open system. This is the first observation of GO’s ability to provide greatly enhanced phase transfer catalysis.