실리카겔에 담지된 4급암모늄염 유도체의 합성 및 이온교환 특성

• 영문명: Preparation of Quaternary Ammonium Salt Derivatives Supported on Silica gel and Its Ion Exchange Characteristics
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 안범수(Beom Shu Ahn)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제25권 제1호, 65~72쪽, 전체 8쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2008.03.31

영문 초록

The ion exchangers supported on silica gel containing primary, secondary, or tertiary amine groups show a behaviour that is weakly acidic, while the quaternary salts are strongly acidic. These properties change according to the hydrophilicities of the modifier functional groups. Ammonium salt derivatives supported on silica gel were prepared from silica modified with 3-Aminopropyltriethoxysiliane and N-3-(Trimethoxysilyl)propylehtylene diamine. The preparation and the ion exchange properties of two systems were discussed. Two systems have different hydrophilicities and contain ammonium chloride derivatives of 3-amminopropyltriethoxysilane and N-3-(triehtoxysilyl)propyl ethylene diamine supported on silica gel, SA+Cl- and SE+ /Cl-, respectively. The high affinity to perchlorate ion presented by the SA+/Cl- through the equilibrium studies of ion exchange led us to its application as an ion selective electrode for the perchlorate ion. The determination of the perchlorate ion in the presence of other anions and in complexes is very difficult. Few analytical methods are available and most of them are indirect. Both materials showed potential use as an ion exchanger; they are thermically stable, achieve equilibrium rapidly in the presence of suitable exchanger ions, and are easily recovered.

목차

1. 서 론

2. 실 험

3. 결과 및 고찰

4. 결 론

감사의 글

참고문헌

키워드

quaternary salts hydrophilicities ion exchange affinity coefficient counterion selectivity