크라운에테르 포스포닉산 모노에틸 에스테르에 의한 알칼리 토금속 양이온의 경쟁 용매추출

• 영문명: Competitive Solvent Extractions of Alkaline Earth Metal Cations by Crown Ether Phosphonic Acid Monoethyl Esters
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 정영진(Chung YeongJin)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제22권 제1호, 9~14쪽, 전체 6쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2005.03.31

영문 초록

Competitive solvent extraction of alkaline earth metal cations from water into organic solvent containing the carboxylic acid crown ether and analogous crown ether phosphonic acid monoethyl esters were investigated. sym-(n-Decyldibenzo)-16-crown-5xyacetic acid underline{1} and monoethyl sym-(n-decyldibenzo)-16-crown-5-oxymethylphosphonic acid underline{3} are structurally identical except for the ionizable groups. Both of them provide similar extraction behavior in terms of efficiency and selectivity, but monoethyl sym-(n-decyldibenzo)-16-crown-5-oxymethylphosphonic acid underline3 showed higher alkaline earth metals loadings at acidic or neutral media. Monoethylsym-(n-octyldibenzo)-16-rown-5-oxymethylphosphonic acid underline{2} showed better selectivity and alkaline earth metals loading than did the analogous sym-(n-octyldibenzo)-16-crown-5-oxymethyldiphosphonic acid underline{6}.

키워드

competitive solvent extraction alkaline earth metal cations crown ether phosphonic acid monoethyl esters