Structural resolution and mechanistic insight into hydrogen adsorption in flexible ZIF-7
Ryan A. Klein, Sarah Shulda, Philip A. Parilla, Pierre Le Maguerès, Rachelle K. Richardson, William Morris, Craig M. Brown, C. Michael McGuirk
Abstract
-arene interactions between adjacent ligands in a sandwich-like adsorption motif. These sites are prevalent in both the dense and the open structure for ZIF-7, and we hypothesize that they play an important role in templating the structure of the open phase. We discuss the implications of our findings for future approaches to rationally tune step-shaped adsorption in ZIF-7, its congeners, and flexible porous adsorbents in general. Lastly, important to the application of flexible frameworks, we show that pelletization of ZIF-7 produces minimal variation in performance.
Topics & Concepts
Rietveld refinementNeutron diffractionAdsorptionDesorptionHydrogenHydrogen storageMetal-organic frameworkChemistryMaterials sciencePowder diffractionIsothermal processCrystal structureCrystallographyChemical engineeringPhysical chemistryThermodynamicsOrganic chemistryPhysicsEngineeringMetal-Organic Frameworks: Synthesis and ApplicationsCrystallography and molecular interactionsAdvanced NMR Techniques and Applications