详细信息

双水相体系选择性萃取分离对氯扁桃酸对映体    

Selective separation of 4-chloromandelic acid enantiomers by aqueous two phase extraction

文献类型:期刊文献

中文题名:双水相体系选择性萃取分离对氯扁桃酸对映体

英文题名:Selective separation of 4-chloromandelic acid enantiomers by aqueous two phase extraction

作者:陆瑞晨[1];彭阳峰[1];赵红亮[1];童天中[1]

机构:[1]华东理工大学化工学院,上海200237

年份:2017

卷号:45

期号:9

起止页码:18

中文期刊名:化学工程

外文期刊名:Chemical Engineering(China)

收录:CSTPCD;;Scopus;北大核心:【北大核心2014】;CSCD:【CSCD2017_2018】;

语种:中文

中文关键词:对氯扁桃酸;羟丙基-β-环糊精;聚乙二醇;硫酸铵;双水相体系;萃取拆分

外文关键词:4-chloromandelic acid enantiomers ; hydroxypropyl-β-cyclodextrin ; polyethylene glycol; ammonium sulfate ; aqueous two phase; extraction separation

摘要:研究了对氯扁桃酸(4-ClMA)对映体在含有羟丙基-β-环糊精(HP-β-CD)的聚乙二醇(PEG)/硫酸铵[(NH_4)_2SO_4]双水相体系中的萃取分配行为。考察了pH、PEG相对分子质量、PEG质量分数、(NH_4)_2SO_4质量分数、HP-β-CD浓度、4-ClMA浓度以及萃取温度对拆分效果的影响。实验结果表明:双水相萃取拆分具有很好的手性分离能力,HP-β-CD对(R)-4-ClMA的识别能力大于对(S)-4-ClMA的识别能力;当pH=6.5,PEG2000的质量分数为20%,(NH_4)_2SO_4的质量分数为20%,HP-β-CD浓度为1 mmol/L,4-ClMA浓度为0.13 mmol/L,萃取温度为25℃时,分离因子α达到1.61,性能因数PfR达到0.065。
The distribution behavior of 4-chloromandelic acid (4-ClMA) enantiomers was studied in aqueous two phase system consisted of polyethylene glycol (PEG)/ammonium sulfate [ ( NH4 )2SO4 ] with hydroxypropyl-β-cyclodextrin (HP43-CD). The influence of pH, relative molecular mass of PEG, mass fraction of PEG, mass fraction of (NH4 )2 SO4, concentration of HP-β-CD, concentration of 4-ClMA and extractive temperature on enantiomeric separation were investigated. The results show that HP-β-CD is inclined to recognize (R)-4-ClMA. Under the condition of pH of 6.5, PEG2000 mass fraction of 20% , ( NH4 )2SO4 mass fraction of 20% , HP-β-CD concentration of l mmol/L, 4-ClMA concentration of 0.13mmol/L and extractive temperature of 25 ℃, the highest enantioselective factor α of 1.61 and performance factor PfR of 0. 065 are obtained.

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