Synthesis, structure and high methane storage of pure D6R Yb(Y) nonanuclear cluster-based zeolite-like metal-organic frameworks

Design and construction of highly porous and diverse zeolite-like metal-organic frameworks (ZMOFs) still remain a great challenge due to the limitation of current synthetic strategies. A double six-membered ring (D6R) is regarded as an effective but challenging secondary building unit to target ZMOF...

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2022-07, Vol.1 (28), p.14795-14798
Main Authors: Li, Hong-Xin, Zhang, Zong-Hui, Fang, Han, Xue, Dong-Xu, Bai, Junfeng
Format: Article
Language:English
Subjects:
Construction
Ligands
Metal-organic frameworks
Methane
Rare earth elements
Topology
Yttrium
Zeolites
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Summary:Design and construction of highly porous and diverse zeolite-like metal-organic frameworks (ZMOFs) still remain a great challenge due to the limitation of current synthetic strategies. A double six-membered ring (D6R) is regarded as an effective but challenging secondary building unit to target ZMOFs. One most recent example of kex -MOF-1 is elegantly constructed from inorganic and organic D6Rs. Nevertheless, there is no documented structure built from pure inorganic D6Rs. Herein, solvothermal reactions between an angular dicarboxylate ligand and rare-earth (RE) ions in the presence of 2-fluorobenzoic acid afforded both 3-periodic RE-MOFs. Considering the newly formed nonanuclear RE clusters and ditopic linkers respectively behaving as pure inorganic D6Rs and connecting edges, both compounds display the well-known zeolitic topology of gme and result in two isostructural RE(Yb/Y)-ZMOFs. Thanks to the long distance of the ditopic ligand, both RE-ZMOFs possess considerably high surface areas and pore volumes, and subsequently demonstrate relatively high gravimetric methane storage working capacities. Pure RE nonanuclear cluster-based ZMOFs with a topology of gme have been constructed using an angular linker and RE ions. Both RE(Yb/Y)-ZMOFs demonstrate relatively high surface areas, pore volumes and gravimetric methane storage working capacities.
ISSN:2050-7488
2050-7496
DOI:10.1039/d2ta02948k