摘要
在全浓度二组分液一固吸附体系中,按组分Ⅰ、组分Ⅱ和吸附剂间相互作用的热力学平衡推导出一个计量置换吸附模型(SDM—A),并从理论上研究了该模型的两种表达式的特征以及与Freundlich经验式的联系与区别。依据两个表达式线性作图得到的两个斜率的相对值,提出了理想吸附体系与非理想吸附体系的观点。
A theoretical model, Stoichiometric Displacement Model of Adsorption (SDM-A) from binary liquid mixture with complete range of concentration in liquid-solid system, is proposed according to the thermodynamic equilibria among the components Ⅰ and Ⅱ as well as adsorbent. The characteristics of the two expressions of the SDM-A and the connection and difference between the SDM-A and Freundlich Empirical Equation are studied theoretically. Based on the relative values of the two slopes for the plots by the two expressions, respectively, a new definition about distinguishing an adsorption system being ideal or non-ideal is presented.
关键词
吸附
模型
二组分
液-固体系
计量置换模型
adsorption, model, binary component mixture in liquid-solid system
