http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이우윤,이용화,이준,홍연기,Lee, Woo Yun,Lee, Yong Hwa,Lee, Jun,Hong, Yeon Ki 한국교통대학교 융복합기술연구소 2014 융ㆍ복합기술연구소 논문집 Vol.4 No.2
As an effective separation method for biomolecules, aqueous two-phase systems based on ionic liquids were suggested. Hydrophobic ionic liquids are more expensive and viscous in spite of their usage in the ionic liquid/water biphasic extraction compared with hydrophilic ionic liquids. In case of aqueous two-phase systems using hydrophilic ionic liquids, they can be diluted in aqueous phase. Experimental results show that aqueous two phase systems can be formed by adding appropriate amount of ionic liquids to aqueous salts solutions. The viscosity of ionic liquid aqueous phase is proportional to the cation chain length in ionic liquids. It is founded that the ionic liquid based aqueous two phase systems are effective for the separation of biomolecules such as acrylic acid.
피페리딘계 이온성 액체와 포스페이트 염으로 구성된 수상이성분계를 이용한 숙신산의 추출
이우윤 ( Woo Yun Lee ),홍연기 ( Yeon Ki Hong ) 한국화학공학회 2016 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.54 No.1
As an effective method for extraction of succinic acid, aqueous two-phase systems based on piperidinium ionic liquids were used in this study. Effects of the alkyl chain length of cation in piperinidium ionic liquids on phase diagram and extraction efficiencies were investigated. Experimental results show that aqueous two phase systems can be formed by adding appropriate amount of piperidinium ionic liquids to aqueous K2HPO4 solutions. It can be found that the ability of piperidinium ionic liquids for phase separation followed the order [OMPip][Br]>[HMPip][Br]>[BMPip][Br]> [EMPip][Br]. The biphase-forming ability of piperidinium ionic liquids was higher than that of imidazolium and pyrrolidinium ionic liquids in the presence of K2HPO4. 75~95% of the succinic acid could be extracted into the ionic liquidrich phase in a single-step extraction. There was little difference in the extraction efficiency of succinic acid by piperidinium ionic liquids comparing to other ionic liquids such as imidazolium and pyrrolonidium ionic liquids. This aqueous two phase system by piperidinium ionic liquid is suggested to have effective application for the separation of succinic acid.