The discovery of more-efficient and stable water adsorbents for adsorption-driven chillers for cooling applications remains a challenge due to the low working capacity of water sorption, high regeneration temperature, low energy efficiency under given operating conditions and the toxicity risk of harmful working fluids for the state-of-the-art sorbents. Here we report the water-sorption properties of a porous zirconium carboxylate metal–organic framework, MIP-200, which features S-shaped sorption isotherms, a high water uptake of 0.39 g g⁻¹ below P/P₀ = 0.25, facile regeneration and stable cycling, and most importantly a notably high coefficient of performance of 0.78 for refrigeration at a low driving temperature (below 70 °C). A joint computational–experimental approach supports that MIP-200 may be a practical alternative to the current commercially available adsorbents for refrigeration when its water adsorption performance is combined with advantages such as the exceptional chemical and mechanical stability and the scalable synthesis that involves simple, cheap and green chemicals.

由于吸水的工作能力低，再生温度高，在给定的工作条件下能量效率低以及有害工作流体的毒性风险，为制冷应用中的吸附驱动式冷水机寻找更高效，稳定的吸水剂仍然是一个挑战。最新的吸附剂。在这里，我们报告了多孔羧酸锆金属-有机骨架MIP-200的吸水特性，其特征为S形吸附等温线，在P / P ₀以下的吸水量为0.39 g g ^-1 = 0.25时，再生容易且循环稳定，最重要的是，在较低的驱动温度（低于70°C）下制冷时，其显着的0.78的高性能系数。联合的计算-实验方法支持MIP-200可以替代目前市售的制冷剂，因为它的水吸附性能兼具优异的化学和机械稳定性以及涉及简单，廉价的可扩展合成等优点和绿色化学品。