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首页> 外文期刊>Separation and Purification Technology >Separation of sugar by solvent extraction with phenylboronic acid and trioctylmethylammonium chloride
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Separation of sugar by solvent extraction with phenylboronic acid and trioctylmethylammonium chloride

机译：苯硼酸和三辛基甲基氯化铵通过溶剂萃取分离糖

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In this paper the solvent extraction of sugar with an ion-pair of boronate anion and quaternary ammonium cation was carried out.Extraction reactions were formulated,and extraction equilibrium constants were obtained based on experimental results.Extraction equilibrium constants,K_f,of extraction of glucose and xylose were higher than those of arabinose,fructose,galactose,mannose,and fucose.We measured the stability constant K_S,between phenylboronic acid and sugars in the aqueous solution to clarify the dominant factor involved in the extraction reaction.The order of K_S values did not correspond to K_f values.This suggests that the lesser ability of 1,3-trans-dio for ion-pair formation with trioctylmethylammonium and the instability of the ion-pair complex in the organic phase due to steric hindrance contribute mainly to the extraction reaction.
机译：本文用硼酸根离子和季铵阳离子对对糖进行溶剂萃取，制定了萃取反应，并根据实验结果得到了萃取平衡常数。葡萄糖萃取的萃取平衡常数K_f木糖和木糖均高于阿拉伯糖，果糖，半乳糖，甘露糖和岩藻糖。我们测量了水溶液中苯硼酸和糖之间的稳定常数K_S，以阐明影响萃取反应的主要因素。K_S值的顺序这表明1,3-反式二偶氮与三辛基甲基铵形成离子对的能力较小，并且由于空间位阻而导致有机相中离子对络合物的不稳定性主要是由于提取反应。

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