固液吸附等温线模型与热力学参数计算

Solid-liquid Adsorption Isotherm Model and Thermodynamic Parameter Calculation

吸附法由于操作方便和价格便宜,广泛应用于分离与纯化领域。吸附等温线模型是理解吸附机理的重要方法,吸引了无数研究人员针对不同吸附体系不断建模和修正。论文收集了13种液相常用的吸附等温线模型,综述了其相关定义以及近十年相关工作的典型例子,并按照提出模型时表面结构和活性位分布的均匀性分类,以便查阅。此外,探讨了用这些模型的模型常数计算吸附过程热力学参数的合理性,以及模型平衡常数的量纲对热力学参数计算的影响。

The adsorption method is widely used in the field of separation and purification due to its convenient operation and low cost.Adsorption isotherm model is an important method to understand the adsorption mechanism,which has attracted numerous researchers to continuously model and modify different adsorption systems.This paper collected 13 kinds of commonly used adsorption isotherm models for liquid phase,reviewed their relevant definitions and typical examples of relevant work in the past decade,and classified them according to the uniformity of surface structure and active site distribution when the models were proposed for reference.In addition,the rationale of using the model constants of these models to calculate the thermo-dynamic parameters of the adsorption process and the influence of the dimension of the model equilibrium constant on the calculation of thermodynamic parameters were discussed.