MONOLAYER ADSORPTION OF GAS MIXTURES ON HOMOGENEOUS AND HETEROGENEOUS SOLIDS
MONOLAYER ADSORPTION OF GAS MIXTURES ON HOMOGENEOUS AND HETEROGENEOUS SOLIDS
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DOI：
10.1016/0009-2509(67)80166-0
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发表时间：
1967-01-01
影响因子：
4.7
通讯作者：
PRAUSNITZ, JM
中科院分区：
文献类型：
--
作者：
HOORY, SE;PRAUSNITZ, JM
本文对气体混合物在均匀表面上的移动的单分子层吸附进行了系统的热力学处理。通过定义一个表面逸度为每个组件，非理想性的混合在单分子层中的二维状态方程中的常数有关。所得到的结果扩展到非均匀表面使用的概念，表面路径罗斯开发。为了表征二元混合物的表面异质性，需要三个异质性参数;其中两个是纯组分的吸附势分布的方差，而第三个是它们的协方差。对于化学性质相似的非极性气体，仅使用纯组分获得的数据就可以很好地估计混合气体在非均质表面上的吸附。
A systematic thermodynamic treatment is described for mobile, monolayer adsorption of gas mixtures on homogeneous surfaces. By defining a surface fugacity for each component, nonideality of mixing in the monolayer is related to constants in the two-dimensional equation of state. The results obtained are extended to heterogeneous surfaces using the concept of surface pathes as developed by Ross. To characterize surface heterogeneity for a binary mixture, three heterogeneity parameters are required; two of these are the variances of the adsorption potential distributions for the pure components, while the third is their covariance. For nonpolar gases which are chemically similar, it is possible to make good estimates of mixed-gas adsorption on heterogeneous surfaces using only data obtained for pure components.