The direct capture of CO₂ and CH₄ from the atmosphere to stabilize the concentrations in the air to control global warming is accelerating. There are continued efforts to develop and optimize different technologies for capture and sequestration of these greenhouse gases from industrial emission sites. In this work we employed MOF-177 as an efficient CO₂ and CH₄ adsorbent at standard temperature and pressure conditions. We demonstrated the possibility of desorbing the gases under study when employing gentle plasma pulses of He. Moreover, we performed the synthesis of methanol from CH₄ using O₂ and CO₂ as oxidants respectively in the presence of MOF-177. We observed the highest conversion for the CH₄ + O₂ system when employing the MOF-177 at (5:1) (CH₄: O₂) flow ratio of 23.5 % and methanol selectivity of 17.65 %. While the best performance for the CH₄ + CO₂ system at the same conditions i.e., (5:1) (CH₄: O₂) flow ratio was 18.4 % for the methane conversion and 11.68 % for the selectivity towards methanol. We expect this preliminary understanding of the adsorption-reaction system under non-thermal plasma environment can lead to future atmospheric remediation technologies.

从大气中直接捕获 CO ₂和 CH ₄以稳定空气中的浓度以控制全球变暖正在加速。不断努力开发和优化不同的技术，以从工业排放场所捕获和封存这些温室气体。在这项工作中，我们在标准温度和压力条件下使用 MOF-177 作为有效的 CO ₂和 CH ₄吸附剂。我们证明了在使用温和的 He 等离子体脉冲时解吸研究中的气体的可能性。此外，我们使用 O ₂和 CO ₂从 CH ₄合成甲醇在 MOF-177 存在下分别作为氧化剂。我们观察到在 (5:1) (CH ₄ : O ₂ ) 流量比为 23.5% 和甲醇选择性为 17.65% 的情况下使用 MOF-177 时，CH ₄ + O ₂系统的转化率最高。而 CH ₄ + CO ₂系统在相同条件下的最佳性能，即 (5:1) (CH ₄ : O ₂ ) 流量比，甲烷转化率为 18.4%，甲醇选择性为 11.68%。我们期望对非热等离子体环境下吸附-反应系统的初步了解可以导致未来的大气修复技术。