TY - JOUR
T1 - Robust Microporous Metal–Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene
AU - Peng, Yun Lei
AU - He, Chaohui
AU - Pham, Tony
AU - Wang, Ting
AU - Li, Pengfei
AU - Krishna, Rajamani
AU - Forrest, Katherine A.
AU - Hogan, Adam
AU - Suepaul, Shanelle
AU - Space, Brian
AU - Fang, Ming
AU - Chen, Yao
AU - Zaworotko, Michael J.
AU - Li, Jinping
AU - Li, Libo
AU - Zhang, Zhenjie
AU - Cheng, Peng
AU - Chen, Banglin
N1 - Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/7/22
Y1 - 2019/7/22
N2 - 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.
AB - 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.
KW - binding sites
KW - gas separation
KW - metal–organic frameworks
KW - physisorption
KW - propylene purification
UR - http://www.scopus.com/inward/record.url?scp=85068089673&partnerID=8YFLogxK
U2 - 10.1002/anie.201904312
DO - 10.1002/anie.201904312
M3 - Article
C2 - 31059186
AN - SCOPUS:85068089673
SN - 1433-7851
VL - 58
SP - 10209
EP - 10214
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 30
ER -