Designing effective cyclic adsorption separation processes, e.g., ethylene/ethane PSA separation, is based on finding an appropriate adsorbent. In this matter, examination of equilibrium and kinetic properties of adsorbents, i.e., isotherms and diffusion coefficients of gasses, is critical. In this study, Na-SSZ-13 zeolite was first synthesized and then ion-exchanged with the Ag⁺ and Cu²⁺ cations. Afterward, ethane and ethylene equilibrium and kinetic adsorptions and IAST calculations on the mentioned zeolites were investigated. Results showed that all three adsorbents are ethylene-selective at equilibrium conditions. Ion-exchanging leads to higher adsorption selectivity in Cu²⁺, while Ag⁺ cation increases the adsorption capacity without altering the selectivity. Furthermore, ion-exchanging increases the diffusivities of both ethylene and ethane in the following order Ag-SSZ-13>Cu-SSZ-13>Na-SSZ-13.

设计有效的循环吸附分离工艺，例如乙烯/乙烷 PSA 分离，是基于找到合适的吸附剂。在这方面，对吸附剂的平衡和动力学特性（即气体的等温线和扩散系数）的检查至关重要。在本研究中，首先合成 Na-SSZ-13 沸石，然后与 Ag ⁺和 Cu ²⁺阳离子进行离子交换。然后，对上述沸石的乙烷和乙烯平衡以及动力学吸附和 IAST 计算进行了研究。结果表明，所有三种吸附剂在平衡条件下都是乙烯选择性的。离子交换导致在 Cu ^{2+ 中}更高的吸附选择性，而 Ag ⁺阳离子在不改变选择性的情况下增加了吸附容量。此外，离子交换按以下顺序增加了乙烯和乙烷的扩散率：Ag-SSZ-13>Cu-SSZ-13>Na-SSZ-13。