Azizian Saeid, Bashiri Hadis
Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65174, Iran.
Langmuir. 2009 Feb 17;25(4):2309-12. doi: 10.1021/la803675h.
Adsorption is one of the most popular methods for reducing pollutants or separation of gases. Therefore it is important to introduce new and extended isotherm equations for binary systems. In the previous adsorption isotherms for binary systems, it is assumed that an adsorbate occupies one site in lattice sites. However, the adspecies may occupy more than one site in the lattice. Here we propose an adsorption isotherm for binary systems where the adsorbates occupy more than one site. The new isotherm equation for multisite occupancy of binary mixtures was derived based on statistical thermodynamics. The present new adsorption isotherm provides information about the structure of molecules in adsorbed form. Finally, the results of the present theoretical study were confirmed by analysis of two experimental systems.
吸附是减少污染物或分离气体最常用的方法之一。因此，引入新的和扩展的二元体系等温线方程很重要。在之前的二元体系吸附等温线中，假设吸附质占据晶格位点中的一个位置。然而，吸附物种可能占据晶格中的多个位置。在此，我们提出一种二元体系的吸附等温线，其中吸附质占据多个位置。基于统计热力学推导了二元混合物多位占据的新等温线方程。目前的新吸附等温线提供了关于吸附形式分子结构的信息。最后，通过对两个实验体系的分析证实了本理论研究的结果。
