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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis, solubility and metal extraction of novel 18-crown-6 ether derivatives into supercritical CO2

등록일
2015년 9월 8일 15시 29분 31초
접수번호
1393
발표코드
ORGN.P-462 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
오유리, yan xinhao, 안소연, 김학원1,*
경희대학교 화학과, Korea
1경희대학교 응용화학과, Korea

Supercritical carbon dioxide (sc-CO2) has been suggested as an environmentally benign, green solvent for heavy metal ions extraction. Sc-CO2 has a variety of advantages such as nontoxic, inexpensive and moderate critical constants (Tc = 31.1℃, Pc = 73.8bar). But, the solvation characteristics of sc-CO2 are similar to hexanes. It acts as a non-polar solvent. Due to weak solute (polar metal ions) ? solvent (non-polar CO2) interactions, the direct extraction of metal ions with sc-CO2 is inefficient. Therefore, we have introduced several CO2-philic groups such as carbonyl, ether, perfluorinated ester and siloxane. For more effective metal extraction in sc-CO2, we have designed and synthesized novel CO2-soluble chelating ligands containing both metal binding segments (18-crown-6 ether moiety) and CO2-soluble segments. Solubilities of synthesized 18-crown-6 ether derivatives have been tested and the relationship between structure and solubility has been suggested. With these CO2-soluble 18-crown-6 ether derivatives the sc-CO2 metal extraction (Cs+ and Sr2+ etc) have been studied.


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