Robust Microporous Metal-Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene

Yun-Lei Peng; Chaohui He; Tony Pham; Ting Wang; Pengfei Li; Rajamani Krishna; Katherine A Forrest; Adam Hogan; Shanelle Suepaul; Brian Space; Ming Fang; Yao Chen; Michael J Zaworotko; Jinping Li; Libo Li; Zhenjie Zhang; Peng Cheng; Banglin Chen

doi:10.1002/anie.201904312

Robust Microporous Metal-Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene

Angew Chem Int Ed Engl. 2019 Jul 22;58(30):10209-10214. doi: 10.1002/anie.201904312. Epub 2019 Jun 24.

Authors

Yun-Lei Peng¹, Chaohui He², Tony Pham³, Ting Wang¹, Pengfei Li⁴, Rajamani Krishna⁵, Katherine A Forrest³, Adam Hogan³, Shanelle Suepaul³, Brian Space³, Ming Fang⁴, Yao Chen⁶, Michael J Zaworotko⁷, Jinping Li², Libo Li^{8

2}, Zhenjie Zhang^{1

9

6}, Peng Cheng^{1

9}, Banglin Chen⁸

Affiliations

¹ College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
² College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, P. R. China.
³ Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, CHE205, Tampa, FL, 33620-5250, USA.
⁴ Department of Chemistry, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, Hebei, China.
⁵ Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH, Amsterdam, The Netherlands.
⁶ State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, P. R. China.
⁷ Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, V94T9PX, Republic of Ireland.
⁸ Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249-0698, USA.
⁹ Key Laboratory of Advanced Energy Materials Chemistry (MOE), Nankai University, Tianjin, 300071, P. R. China.

PMID: 31059186
DOI: 10.1002/anie.201904312

Abstract

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.

Keywords: binding sites; gas separation; metal-organic frameworks; physisorption; propylene purification.

Abstract

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