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Rational Design of Microporous MOFs with Anionic Boron Cluster Functionality and Cooperative Dihydrogen Binding Sites for Highly Selective Capture of Acetylene
Author(s) -
Zhang Yuanbin,
Hu Jianbo,
Krishna Rajamani,
Wang Lingyao,
Yang Lifeng,
Cui Xili,
Duttwyler Simon,
Xing Huabin
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202007681
Subject(s) - acetylene , microporous material , selectivity , ethylene , chemistry , rational design , boron , hydride , hydrogen bond , metal organic framework , hydrogen , cluster (spacecraft) , inorganic chemistry , materials science , molecule , nanotechnology , organic chemistry , adsorption , catalysis , computer science , programming language
Separation of acetylene (C 2 H 2 ) from carbon dioxide (CO 2 ) or ethylene (C 2 H 4 ) is important in industry but limited by the low capacity and selectivity owing to their similar molecular sizes and physical properties. Herein, we report two novel dodecaborate‐hybrid metal–organic frameworks, MB 12 H 12 (dpb) 2 (termed as BSF‐3 and BSF‐3‐Co for M=Cu and Co), for highly selective capture of C 2 H 2 . The high C 2 H 2 capacity and remarkable C 2 H 2 /CO 2 selectivity resulted from the unique anionic boron cluster functionality as well as the suitable pore size with cooperative proton‐hydride dihydrogen bonding sites (B−H δ− ⋅⋅⋅H δ+ −C≡C−H δ+ ⋅⋅⋅H δ− −B). This new type of C 2 H 2 ‐specific functional sites represents a fresh paradigm distinct from those in previous leading materials based on open metal sites, strong electrostatics, or hydrogen bonding.