Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 287, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2020.121345
Keywords
Metal-organic framework; Crystal structure; Gas adsorption; Separation
Funding
- National Natural Science Foundation of China [21601145]
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By employing a tripod rigid ligand with six coordination sites, 4,4',4 ''-(pyridine-2,4,6-triyetribenzoic acid (H(6)PTA), a microporous terbium(III)-organic framework, [(Me)(2)NH2](1.5)[Tb-1.5(PTA)]center dot 9H(2)O (1) has been synthesized under the solvothermal condition. Structural analysis demonstrates that 1 is a 3D anionic framework based on two kinds of Tb(III) units, which presents a rare framework constructed from ternary secondary building units (SBUs) and shows a new (4,5,6)-connected topology. Gas adsorption measurements reveal that 1 exhibits the significant C2H2 and C2H4 adsorption capacity but negligible uptake of CH4, which makes 1 as a promising adsorbent for C2H2/CH4 and C2H4/CH4 separation.
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