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Abstract Isoreticular chemistry is among the most powerful strategies for designing novel materials with optimizable pore geometry and properties. Of great significance to the further advance of isoreticular chemistry is the development of broadly applicable new concepts capable of guiding and systematizing the ligand‐family expansion as well as establishing correlations between dissimilar and seemingly uncorrelated ligands for better predictive synthetic design and more insightful structure and property analysis. Here ligand circuit concept is proposed and its use has been demonstrated for the synthesis of a family of highly stable, high‐performance pore‐space‐partitioned materials based on an acyclic ligand,trans,trans‐muconic acid. This work represents a key step toward developing highly porous and highly stable pore‐space‐partitioned materials from acyclic ligands. The new materials exhibit excellent sorption properties such as high uptake capacity for CO2(81.3 cm3 g−1) and C2H2(165.4 cm3 g−1) by CPM‐7.3a‐NiV. CPM‐7.3a‐CoV shows C2H6‐selective C2H6/C2H4separation properties and its high uptakes for C2H4(134.0 cm3 g−1) and C2H6(148.0 cm3 g−1) at 1 bar and 298 K contribute to the separation potential of 1.35 mmol g−1. The multi‐cycle breakthrough experiment confirms the promising separation performance for C2H2/CO2.
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Tailorable Multi‐Modular Pore‐Space‐Partitioned Vanadium Metal‐Organic Frameworks for Gas Separation
Abstract Currently, few porous vanadium metal‐organic frameworks (V‐MOFs) are known and even fewer are obtainable as single crystals, resulting in limited information on their structures and properties. Here this work demonstrates remarkable promise of V‐MOFs by presenting an extensible family of V‐MOFs with tailorable pore geometry and properties. The synthesis leverages inter‐modular synergy on a tri‐modular pore‐partitioned platform. New V‐MOFs show a broad range of structural features and sorption properties suitable for gas storage and separation applications for C2H2/CO2, C2H6/C2H4, and C3H8/C3H6. Thec/aratio of the hexagonal cell, a measure of pore shape, is tunable from 0.612 to 1.258. Other tunable properties include pore size from 5.0 to 10.9 Å and surface area from 820 to 2964 m2g−1. With C2H2/CO2selectivity from 3.3 to 11 and high uptake capacity for C2H2from 65.2 to 182 cm3g−1(298K, 1 bar), an efficient separation is confirmed by breakthrough experiments. The near‐record high uptake for C2H6(166.8 cm3g−1) contributes to the promise for C2H6‐selective separation of C2H6/C2H4. The multi‐module pore expansion enables transition from C3H6‐selective to more desirable C3H8‐selective separation with extraordinarily high C3H8uptake (254.9 cm3g−1) and high separation potential (1.25 mmol g−1) for C3H8/C3H6(50:50 v/v) mixture.
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- Award ID(s):
- 2117040
- PAR ID:
- 10507599
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Advanced Materials
- Volume:
- 36
- Issue:
- 30
- ISSN:
- 0935-9648
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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