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Characterisation of metal organic frameworks for adsorption cooling

机译：用于吸附冷却的金属有机骨架的表征

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摘要

Silica gel/water adsorption cooling systems suffer from size, performance and cost limitations. Therefore, there is a need for new adsorbent materials that outperform silica gel. Metal organic frameworks (MOFs) are new micro-porous materials that have extraordinary porosity and uniform structure. Due to the lack of published data that characterise MOF/water adsorption, this paper experimentally investigates the adsorption characteristics of HKUST-1 (Cu-BTC (copper benzene-1,3,5-tricarboxylate), C_(18)H_6Cu_3O_(12)) and MIL-100 (Fe-BTC (Iron 1,3,5-benzenetricarboxylate), C_9H_3FeO_6) MOFs compared to silica gel RD-2060. The adsorption characteristics of Silica gel RD-2060, HKUST-1 and MIL-100 were determined using an advanced gravimetric dynamic vapour sorption analyser (DVS). Results showed that HKUST-1 performed better than silica gel RD-2060 with an increase of water uptake of 93.2%, which could lead to a considerable increase in refrigerant flow rate, cooling capacity and/or reducing the size of the adsorption system. However, MIL-100 MOF showed reduced water uptake comparable to silica gel RD-2060 for water chilling applications with evaporation at 5 ℃. These results highlight the potential of using MOF materials to improve the efficiency of water adsorption cooling systems.
机译：硅胶/水吸附冷却系统受尺寸，性能和成本的限制。因此，需要优于硅胶的新型吸附材料。金属有机骨架（MOF）是新型微孔材料，具有非凡的孔隙率和均匀的结构。由于缺乏公开的数据来表征MOF /水的吸附特性，本文通过实验研究了HKUST-1（Cu-BTC（铜-1,3,5-三羧酸铜），C_（18）H_6Cu_3O_（12）的吸附特性。 ）和MIL-100（Fe-BTC（1,3,5-苯三甲酸铁），C_9H_3FeO_6）MOF与硅胶RD-2060进行比较。硅胶RD-2060，HKUST-1和MIL-100的吸附特性是使用先进的重量动态气相吸附分析仪（DVS）测定的。结果表明，HKUST-1的性能优于硅胶​​RD-2060，吸水率增加93.2％，这可能导致制冷剂流量，冷却能力和/或吸附系统尺寸的显着增加。但是，MIL-100 MOF在5℃蒸发时，与水冷应用相比，硅胶RD-2060的吸水率可降低。这些结果凸显了使用MOF材料改善水吸附冷却系统效率的潜力。

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