Premium
Robust Microporous Metal–Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene
Author(s) -
Peng YunLei,
He Chaohui,
Pham Tony,
Wang Ting,
Li Pengfei,
Krishna Rajamani,
Forrest Katherine A.,
Hogan Adam,
Suepaul Shanelle,
Space Brian,
Fang Ming,
Chen Yao,
Zaworotko Michael J.,
Li Jinping,
Li Libo,
Zhang Zhenjie,
Cheng Peng,
Chen Banglin
Publication year - 2019
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.201904312
Subject(s) - propyne , microporous material , materials science , chemistry , photochemistry , organic chemistry
Simultaneous removal of trace amounts of propyne and propadiene from propylene is an important but challenging industrial process. We report herein a class of microporous metal–organic frameworks ( NKMOF‐1‐M ) with exceptional water stability and remarkably high uptakes for both propyne and propadiene at low pressures. NKMOF‐1‐M separated a ternary propyne/propadiene/propylene (0.5 : 0.5 : 99.0) mixture with the highest reported selectivity for the production of polymer‐grade propylene (99.996 %) at ambient temperature, as attributed to its strong binding affinity for propyne and propadiene over propylene. Moreover, we were able to visualize propyne and propadiene molecules in the single‐crystal structure of NKMOF‐1‐M through a convenient approach under ambient conditions, which helped to precisely understand the binding sites and affinity for propyne and propadiene. These results provide important guidance on using ultramicroporous MOFs as physisorbent materials.