有机羧酸在强碱性阴离子交换树脂上的超当量吸附  

Ion Exchange Superequivalent Sorption of Carboxylic Acids on Stronge Base Anion Exchange Resin

作　　者：邵彤 盛芬玲[1] 陶祖贻 

机构地区：[1]兰州大学现代物理系和测试中心,现在西安石油学院应化系730001

出　　处：《离子交换与吸附》1993年第1期1-4,共4页Ion Exchange and Adsorption

基　　金：国家自然科学基金

摘　　要：本文测定了甲酸、乙酸、丙酸和苯甲酸在强碱性阴离子交换树脂上的吸附等温线,观测到了甲酸、乙酸和丙酸的超当量吸附。通过对吸附了上述四种有机羧酸的离子交换树脂的红外光谱的研究,探讨了造成超当量吸附的原因,结果表明其原因是有机羧酸以多聚体形式占据交换位置。用Bull方程求算了甲酸和苯甲酸在强碱性阴离子交换树脂上的标准吸附自由能。The sorption isotherms of formic acid, acetic acid, propionic acid and benzoic acid on the 201 × 7 strong base anion exchange resin in Cl- form were investigated. The ion exchange superequivalent sorption phenomenon of the aliphalic carboxylic acids was observed. The infrared spectra of the carboxylic acids adsorbed on the 201 ×7 resin were used to study the mechanism of uptake of carboxylic acid on anion exchange resin. The free energy changes of sorption of formic acid and benzoic acid on the 201 × 7 resin were calaculated by using the Bull equation.

关 键 词：有机羧酸 离子交换树脂 吸附 

分 类 号：O622.5[理学—有机化学]