Extraction of Levulinic Acid from Aqueous Solution Using Trioctylamine at Different Temperatures

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-17 DOI:10.1007/s10953-024-01394-4

Behnaz Asadzadeh, Mohammed Saad, Petri Uusi-Kyyny, Ville Alopaeus

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Abstract

Levulinic acid (LA), a carboxylic acid with a keto-acid structure, has recently been gaining increasing attention as a promising biorefinery platform chemical due to its potential to be feasible and sustainable. This work focuses on using trioctylamine (TOA) to separate LA from an aqueous solution by liquid–liquid extraction. For that, binodal curves and tie lines were determined at T = (293.15, 313.15, and 333.15) K under atmospheric pressure. The slope of the determined tie lines demonstrates that higher extraction efficiencies are possible with higher acid concentrations. Furthermore, infrared spectroscopy (FT-IR) was applied to better understand the behavior of phase diagrams. This study detected the acid-extractant complex formation between (LA) and (TOA). Finally, the experimental data were successfully correlated with the NRTL model at all the measured temperatures. The obtained parameters were applied using a decanter model.

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在不同温度下使用三辛胺从水溶液中萃取乙酰丙酸

乙酰丙酸（LA）是一种具有酮酸结构的羧酸，由于其潜在的可行性和可持续性，最近作为一种有前途的生物精炼平台化学品受到越来越多的关注。这项工作的重点是使用三辛胺（TOA）通过液-液萃取从水溶液中分离出 LA。为此，研究人员在常压下于 T = (293.15、313.15 和 333.15) K 测定了二项曲线和连接线。所测定的直线斜率表明，酸浓度越高，萃取效率越高。此外，还采用了红外光谱（FT-IR）来更好地了解相图的行为。这项研究检测了（LA）和（TOA）之间酸-萃取剂复合物的形成。最后，实验数据成功地与所有测量温度下的 NRTL 模型相关联。获得的参数被应用于滗水器模型。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.