Recent progress on water vapor adsorption equilibrium by metal-organic frameworks for heat transformation applications

Adsorption-based heat transformation systems are studied from the twentieth century; however, their performance is low to replace conventional systems. Metal-organic frameworks (MOFs) providing a new class of micro- and nano-porous organic adsorbents. These have adjustable geometry/topology with large surface area pore volume. A comparison coefficient (COP) between MOFs adsorbents-based cooling made for years 1975–2020. Conventional adsorbents achieve COP 0.85, whereas it improved 2.00 in case MOFs. The main bottleneck lower level adsorption equilibrium amount. This study aimed provide comprehensive detail water-vapor physicochemical properties hydrophilic Zn based not stable presence water-vapors, MIL series, Zr, Ni, Cu relatively more stable. Among MOFs, MIL-101(Cr) possesses highest uptake 1.45 kg/kg at 25 °C (saturation condition) outperformed applications. Its can be increased 1.60 by coating graphite oxide. For water desalination, MIL-53(Al) exhibits specific daily production 25.5 m3/ton.day (maximum) power 789.4 W/kg. Both found promising which considered various