H₂S and CO₂ are considered two main impurities of natural gas and biogas. These impurities must be removed in order to achieve economic and environmental restrictions. Adsorption is a promising technology studied to achieve this goal. Among alternative adsorbents studied to capture H₂S and CO₂, porous aromatic frameworks (PAFs) had shown potential application because of suitable selectivity and remarkable adsorption capacity. However, H₂S and CO₂ adsorption/desorption data on PAF-30 are still scarce in literature. Thus, in this work, H₂S (up to 2.5 bar) and CO₂ and CH₄ (up to 50 bar) adsorption/desorption isotherms on PAF-30 were determined at 293, 303 and 313 K for the first time in literature. PAF-30 was synthesized and characterized by XRD, FTIR, ¹³C-NMR, Ar and CO₂ physisorption, SEM, TEM, TGA and DSC analyzes. Then, adsorption isotherms were determined gravimetrically. Experimental data were modelled with Jensen-Seaton equation. The results indicated that PAF-30 presents adsorption capacities in the order H₂S > CO₂ > CH₄. Adsorption/desorption branches do not match for systems studied, due to a hysteresis effect. Adsorption capacity decreases with temperature, indicating that physisorption is the main phenomenon observed. Experimental data were represented by Jensen-Seaton model. Thermodynamic analysis showed that all systems are exothermic and spontaneous. Working capacities obtained indicate that temperature reduces the performance for gas purification and that H₂S systems are affected by hysteresis loop. Moreover, cyclic adsorption results show that PAF-30 has potential to be applied and further studied in PSA simulations for H₂S and CO₂ capture under high-pressure conditions.

H ₂ S和CO ₂被认为是天然气和沼气的两种主要杂质。必须除去这些杂质以达到经济和环境限制。吸附是为实现这一目标而研究的一项有前途的技术。在用于捕获H ₂ S和CO ₂的替代吸附剂中，多孔芳族骨架(PAF)由于合适的选择性和显着的吸附能力而显示出潜在的应用。然而，文献中PAF-30的H ₂ S和CO ₂吸附/解吸数据仍然很少。因此，在这项工作中，文献中首次在293、303和313 K下测定了PAF-30上的H ₂ S（高达2.5 bar）和CO ₂和CH ₄ （高达50 bar）吸附/解吸等温线。合成了PAF-30，并通过XRD、FTIR、¹³ C-NMR、Ar和CO ₂物理吸附、SEM、TEM、TGA和DSC分析进行表征。然后，通过重量分析确定吸附等温线。实验数据采用 Jensen-Seaton 方程建模。结果表明，PAF-30的吸附能力大小顺序为H ₂ S>CO ₂  >CH ₄。由于滞后效应，吸附/解吸分支与所研究的系统不匹配。吸附能力随温度降低，表明物理吸附是观察到的主要现象。实验数据由 Jensen-Seaton 模型表示。热力学分析表明所有系统都是放热且自发的。获得的工作能力表明温度降低了气体净化的性能并且H ₂ S系统受到磁滞回线的影响。此外，循环吸附结果表明PAF-30在高压条件下H ₂ S和CO _{2捕集的PSA模拟中具有应用和进一步研究的潜力。}