本文選題：絡(luò)合萃取 + -羥基丙酸��； 參考：《過程工程學(xué)報(bào)》2017年06期

【摘要】：以三辛胺為萃取劑,分別用正辛醇、二氯甲烷、乙酸乙酯、4-甲基-2-戊酮、正己烷、環(huán)己烷為稀釋劑對3-羥基丙酸稀溶液進(jìn)行絡(luò)合萃取,分析了稀釋劑對萃取的影響,討論了溫度、溶液p H、相比及絡(luò)合劑體積分?jǐn)?shù)對絡(luò)合萃取相平衡分配系數(shù)的影響,利用傅立葉紅外光譜儀測定了負(fù)載有機(jī)相中萃合物的結(jié)構(gòu),對三辛胺絡(luò)合萃取3-羥基丙酸的機(jī)理進(jìn)行了探討.結(jié)果表明,正辛醇作稀釋劑萃取效果最好,平衡分配系數(shù)高達(dá)4.46.以Na OH溶液進(jìn)行反萃,3-羥基丙酸的反萃率為99.6%.
[Abstract]:Trioctylamine was used as extractant to extract 3-hydroxypropionic acid dilute solution with n-octanol, dichloromethane, ethyl acetate 4-methyl-2-pentanone, n-hexane and cyclohexane, respectively. The effects of temperature, solution pH, ratio and the volume fraction of complexing agent on the equilibrium partition coefficient of complexation extraction phase were discussed. The structure of the extractant in the loaded organic phase was determined by Fourier transform infrared spectroscopy (FTIR). The mechanism of complex extraction of 3-hydroxypropionic acid by trioctylamine was discussed. The results showed that the extraction efficiency of n-octanol as diluent was the best, and the equilibrium partition coefficient was as high as 4.46. The stripping rate of 3-hydroxypropionic acid from NaOH solution is 99.6.
【作者單位】： 中國科學(xué)院過程工程研究所綠色過程與工程重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué)化學(xué)與化工學(xué)院;中國科學(xué)院青島生物能源與過程研究所;
【基金】：山東泰山學(xué)者攀登計(jì)劃資助項(xiàng)目(編號:tspd20150210) 國家自然科學(xué)基金資助項(xiàng)目(編號:21506221,21676283)
【分類號】：TQ028.32
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本文編號：1785472