Abstract: In this paper,the adsorption of alkane-alcohol binary non-aqueous solutions on DOO1 and TS-TR resins is investigated.Local adsorption isotherms (20?℃) from binary liquid mixture consisting of butanol-heptane,ethanol-hexane on two kinds of resins with a fixed moisture content are measured respectively.Based on NBP-a model,an isotherm adsorption model was developed,and energy distribution density function is developed with Stieltjes transform.Results show that surface energy heterogeneity of adsorbent and nonideality of solution play an important role in the adsorption.Moisture content in resin also affects on its surface energy heterogeneity.The surfac energy heterogeneity of polar DOO1 resin increased with moisture content,and the surface energy heterogeneity of non-polar TS-TR resin also changes significantly with moisture content.Calculated results with the adsorption model agree with the results of experiments.

摘要： 研究了DOO1和TS -TR树脂在非水烃 -醇溶液中的吸附 ,考察了不同水含量的两种树脂在正丁醇 -正庚烷、乙醇 -正己烷组成的二元混合溶液中的等温吸附特性 ,用NBP -a模型建立了相应的等温吸附数学模型 ,并就树脂水含量对其表面能量非均匀性的影响进行了初步研究 ,用Stieltjes变换法对树脂表面能量非均匀密度函数给出了分析解 .结果表明 ,吸附剂表面能量非均匀性及溶液非理想性是影响等温吸附的重要因素 ,极性的DOO1树脂水含量增加 ,其表面能量非均匀性增强 ,非极性TS -TR树脂水含量变化 ,其表面能量非均匀性也有明显变化 .模型拟合与实验吻合很好