The climate challenge calls for the design of energy-efficient CO₂-separation materials. CO₂-selective solid physisorbents are characterized by a low energy penalty and enable the most promising and energy-efficient CO₂ separation technologies by applying vacuum swing adsorption (VSA). Here, we show that a diammonium-pillared microporous organically pillared layered silicate 7 (MOPS-7) represents a CO₂-selective physisorbent, synthesized by simple ion exchange of an inexpensive clay. This MOPS provides high dynamic, reversible, and reproducible CO₂ uptakes and selectivities proven in dynamic breakthrough experiments mimicking flue gas, natural gas, and biogas conditions. The selective interaction with CO₂ is dominated by the multipole interactions with the microporous hybrid material. Thus, the energy penalty attributed to regeneration is intrinsically reduced. The simplicity and modularity of pillaring low-budget and environmentally friendly clays, combined with industrially capable performance with respect to thermal stability, high dynamic CO₂ adsorption selectivity, and energy-efficient restoration renders MOPS-7 a highly attractive CO₂ adsorbent.

气候挑战要求设计节能的CO ₂分离材料。CO ₂选择性固体吸附剂的特点是能量损失低，并且通过应用真空摆动吸附（VSA）可以实现最有前途和最节能的CO ₂分离技术。在这里，我们表明，二铵柱状微孔有机柱状层状硅酸盐7（MOPS-7）代表通过简单的廉价粘土离子交换合成的CO ₂选择性物理吸附剂。这种MOPS具有高动态，可逆和可再现的CO ₂吸收率和选择性，在模拟烟道气，天然气和沼气条件的动态突破实验中得到了证明。与CO的选择性相互作用₂与微孔杂化材料的多极相互作用占主导。因此，固有地减少了归因于再生的能量损失。带支柱的低成本和环保型粘土的简单性和模块化，再加上热稳定性，高动态CO ₂吸附选择性和节能修复方面的工业性能，使MOPS-7成为极具吸引力的CO ₂吸附剂。