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借鉴热力学状态方程在气液平衡中的经验,修改了二维van der Waals状态方程,并在气固吸附平衡中应用。从纯组分的吸附等温线出发,推算气和二氧化碳混和物及二氧化碳和一氧化碳的混和物分别在C_u(I)Y沸石上的吸附平衡。还用另外三个吸附模型的计算和比较。它们是理想吸附溶液模型,Flory—Huggins活度系数方程的吸附空穴溶液模型及二维van der Waals状态方程。结果表明,本文改进的方程推算实验数据的效果比其它模型好,尤其是关于一氧化碳和二氧化碳在C_u(I)Y石上的吸附,络合吸附和物理吸附是同时发生的。
Drawing on the experience of thermodynamic equation of state in gas-liquid equilibrium, the state equation of two-dimensional van der Waals was modified and applied to the equilibrium of gas-solid adsorption. Based on the adsorption isotherms of the pure components, the adsorption equilibrium of the mixture of gas and carbon dioxide and the mixture of carbon dioxide and carbon monoxide on C_u (I) Y zeolites, respectively, is estimated. The calculation and comparison of the other three adsorption models were also used. They are the ideal adsorption solution model, the Flory-Huggins activity coefficient equation of the adsorbed hole solution model and two-dimensional van der Waals equation of state. The results show that the improved equations in this paper are more effective than other models in estimating the experimental data, especially for the adsorption, adsorption and physical adsorption of carbon monoxide and carbon dioxide on C_u (I) Y stone.