膜分散萃取工艺中三辛胺与丙酸结合方式的红外光谱研究

Study on the Combination of Tri-Octylamine and Propionic Acid in Membrane Dispersion Extraction with FTIR

红外光谱可以清晰地展示出萃取剂与被萃取物质之间的相互作用关系,实验采用三辛胺(TOA)作为萃取剂基于膜分散萃取技术研究了三辛胺与丙酸的结合方式。通过对纯丙酸,丙酸正辛醇溶液,以及萃取前后的有机相进行红外光谱表征,结果证明TOA与丙酸存在着氢键结合与离子缔合的两种结合方式,而且通过峰面积的对比,离子缔合的萃合物的量要远大于氢键缔合的萃合物。

Infrared spectroscopycan clearly show the combination of extractant and solute in the extraction process,trioctylamine(TOA)was used as the extractant,and the combination of TOA and propionic acid was studied based on the membrane dispersion extraction process.Infrared spectroscopy of pure propionic acid,n-octanol and organic phase before and after extraction,the results prove that there are hydrogen bonding and ion association between TOA and propionic acid,and through the comparison of peak area,the amount of ion-associated extracts is much greater than that of hydrogen-bonded extracts.