ArticleChemistry of materials : a publication of the American Chemical Society2025
Shaping Hierarchical Porosity Beads from Metal-Organic Framework Powders Using Freeze Spherification.
Article in Chemistry of materials : a publication of the American Chemical Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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4 authors.
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Abstract
Microporous powdered Metal-Organic Frameworks (MOFs) shaped by conventional mechanical densification methods (e.g., pelletization, granulation) present internal diffusion limitations and pressure drops that limit their technological leap to industrial applications. Therefore, the ongoing search for novel shaping methods that could manufacture controlled hierarchical porous structures with enhanced diffusion, high surface area, crystallinity, and mechanical robustness is needed. In this work, a freeze spherification method is developed to shape MOF-808 powder into spherical beads with hierarchical micro/macro porosity. The optimum spherical bead composition, in terms of suspension solids loading (10, 20, or 30 vol %) and hydroxypropyl methylcellulose (HPMC) binder content (30, 25, and 20 wt %), is determined by considering the bulk density, MOF surface accessibility, and the formation of a highly permeable porous structure in the final beads. The MOF-808 in powder and spherical bead forms is characterized by PXRD, IR, TGA, SEM, N
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