Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal–Organic Framework MIL‐160(Al)

Abstract

Abstract The energy‐storage capacities of a series of water‐stable porous metal–organic frameworks, based on high‐valence metal cations (Al 3+ , Fe 3+ , Cr 3+ , Ti 4+ , Zr 4+ ) and polycarboxylate linkers, were evaluated under the typical conditions of seasonal energy‐storage devices. The results showed that the microporous hydrophilic Al‐dicarboxylate MIL‐160(Al) exhibited one of the best performances. To assess the properties of this material for space‐heating applications on a laboratory pilot scale with an open reactor, a new synthetic route involving safer, greener conditions was developed. This led to the production of MIL‐160(Al) on a 400 g scale, before the material was shaped into pellets through a wet‐granulation method. The material exhibited a very high energy‐storage capacity for a physical‐sorption material (343 Wh kg −1 ), which is in full agreement with the predicted value.