氨基酸与离子交换树脂相互作用的研究(Ⅱ)——高浓度下离子交换树脂超当量吸附氨基酸的机理

Studies on the Interaction Between Amino Acid and Ion Exchange Resin ( Ⅱ)——Mechanism of Superequivalent Adsorption of Amino Acid on Ion Exchange Resin at High Concentration

近年来,对氨基酸离子交换平衡虽有不少研究,但涉及超当量吸附的研究并不多见,且解释亦各有不同.本文拟对超当量吸附机理作深入研究. 1 实验部分 本文所用材料、仪器、分析方法及等温线的测定方法同文献.测定甘氨酸从树脂上被水解吸的速度的方法同文献.

The adsorption isotherms of glycine, the infrared spectroscopy of glycine adsorbed on the ion exchange resin and the desorption rate of glycine from the ion exchange resin were used to study the mechanism of superequivalent adsorption of amino acid on the ion exchange resin. It can be concluded that the mechanism of the superequivalent adsorption is the formation of the second layer of glycine molecule, and the carboxylic groups of the first layer of glycine on the ion exchange resin act as the exchange sites for the second layer of glycine.