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Title: A MOF‐based Ultra‐Strong Acetylene Nano‐trap for Highly Efficient C 2 H 2 /CO 2 Separation
Abstract

Porous materials with open metal sites have been investigated to separate various gas mixtures. However, open metal sites show the limitation in the separation of some challenging gas mixtures, such as C2H2/CO2. Herein, we propose a new type of ultra‐strong C2H2nano‐trap based on multiple binding interactions to efficiently capture C2H2molecules and separate C2H2/CO2mixture. The ultra‐strong acetylene nano‐trap shows a benchmarkQstof 79.1 kJ mol−1for C2H2, a record high pure C2H2uptake of 2.54 mmol g−1at 1×10−2 bar, and the highest C2H2/CO2selectivity (53.6), making it as a new benchmark material for the capture of C2H2and the separation of C2H2/CO2. The locations of C2H2molecules within the MOF‐based nanotrap have been visualized by the in situ single‐crystal X‐ray diffraction studies, which also identify the multiple binding sites accountable for the strong interactions with C2H2.

 
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NSF-PAR ID:
10235919
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Angewandte Chemie
Volume:
133
Issue:
10
ISSN:
0044-8249
Page Range / eLocation ID:
p. 5343-5348
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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