Gas storage via adsorption in microporous crystals, such as zeolites, has the potential to transform both the energy and transportation sectors. This potential results from the highly tunable pore chemistry and geometry of zeolites, which allows for precise control of the chemical environment of the adsorbed gas. However, while strong gas–solid interactions are desirable to maximize gas storage capacity, they hinder the effective release of the stored gas species. In the current work, the partial reduction of a nickel-oxide/zeolite nanocomposite led to a remarkable heat release upon exposure to air, which was attributed to the exothermic healing of oxygen vacancies in the NiO_1–x lattice. This heating effect was reproducible over at least 10 treatments and was compared to different types of porous supports, providing evidence that uniform micropores and an optimal pore size are required to obtain the observed heating properties. We demonstrate that this heating phenomenon can be applied to the desorption of hysteretic ammonia, leading to 38% desorption of the chemisorbed gas without the need for external heating or pressure swing.

中文翻译：

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空位修复作为解吸工具：氧气触发的NiO _{1– x} / MOR去除存储的氨的实验和模拟验证

通过吸附在微孔晶体（例如沸石）中的气体储存具有改变能源和运输领域的潜力。这种潜力来自于高度可调节的孔隙化学性质和沸石的几何形状，从而可以精确控制吸附气体的化学环境。然而，尽管强烈的气固相互作用是最大程度地提高储气量所需要的，但它们却阻碍了所储藏气体的有效释放。在当前的工作中，氧化镍/沸石纳米复合材料的部分还原导致暴露于空气中时产生大量的热释放，这归因于NiO _{1– x}中氧空位的放热愈合。格子。该加热效果在至少10次处理中可重现，并与不同类型的多孔载体进行了比较，从而提供了证据，证明需要均匀的微孔和最佳孔径才能获得观察到的加热性能。我们证明了这种加热现象可用于滞后氨的解吸，从而无需外部加热或压力波动即可使化学吸附气体解吸38％。