Potential Theory of Multicomponent Adsorption
Potential Theory of Multicomponent Adsorption
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多组分吸附势理论
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
E. Stenby
中科院分区：
文献类型：
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作者：
A. Shapiro;E. Stenby
本文在Polanyi提出的势能概念的基础上发展了一个多组分吸附理论。该混合物被认为是一种异质物质隔离在由吸附剂发出的外场。相同的标准状态方程，没有额外的拟合参数，用于隔离和散装相。用这种方法，需要很少的参数来关联纯组分吸附等温线。这些参数可用于预测多组分混合物的吸附平衡，而无需额外的调整。建立了势流理论与扩张压力概念之间的联系，研究了势流理论的一致性问题。数值算法的建议用于评估的分离状态的混合物中的吸附力的势场。与实验数据的比较表明，良好的协议和高度的可预测性的理论发展。
We develop a theory of multicomponent adsorption on the basis of the potential concept originally suggested by Polanyi. The mixture is considered as a heterogeneous substance segregated in the external field emitted by the adsorbent. The same standard equation of state, with no additional fitting parameters, is used for the segregated and for the bulk phases. With this approach, few parameters are needed to correlate pure component adsorption isotherms. These parameters may be used to predict adsorption equilibria of multicomponent mixtures without additional adjustment. A connection between the potential theory and the spreading pressure concept is established, and problems of the theory consistency are studied. Numerical algorithms are suggested for evaluation of the segregated state of the mixture in the potential field of adsorption forces. Comparison with experimental data shows good agreement and high degree of predictability of the theory developed.