ZIF-8 Pellets as a Robust Material for Hydrogen Cryo-Adsorption Tanks.

ABSTRACT: Cryoadsorption on the inner surface of porous materials is a promising solution for safe, fast, and reversible hydrogen storage. Within the class of highly porous metal-organic frameworks, zeolitic imidazolate frameworks (ZIFs) show high thermal, chemical, and mechanical stability. In this study, we selected ZIF-8 synthesized mechanochemically by twin-screw extrusion as powder and pellets. The hydrogen storage capacity at 77 K and up to 100 bar has been analyzed in two laboratories applying three different measurement setups showing a high reproducibility. Pelletizing ZIF-8 increases the packing density close to the corresponding value for a single crystal without loss of porosity, resulting in an improved volumetric hydrogen storage capacity close to the upper limit for a single crystal.

SUBMITTER: Balderas-Xicohtencatl R 

PROVIDER: S-EPMC10523355 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature