In:
Angewandte Chemie, Wiley, Vol. 134, No. 39 ( 2022-09-26)
Abstract:
The engineering and tailoring of porous materials to realize the precise discrimination of CO 2 and C 2 H 2 , with almost identical kinetic diameters, is a challenging task. We herein report the first example of the kinetic‐sieving of relatively larger molecule of C 2 H 2 from CO 2 by a novel sulfonic anion‐pillared hybrid ultramicroporous materials of ZU‐610a. Specifically, ZU‐610 constructed from copper(II), isonicotinic acid and 1,2‐ethanedisulfonic acid is synthesized and shows the preferential affinity for C 2 H 2 over CO 2 . After the post‐synthetic heat treatment of ZU‐610, ZU‐610a with a contracted aperture is obtained. Interestingly, the C 2 H 2 ‐selctive ZU‐610 was reversed to the CO 2 ‐selective ZU‐610a. High purity C 2 H 2 ( 〉 99.5 %) could be directly obtained from the dynamic breakthrough experiments on an equimolar C 2 H 2 /CO 2 mixture at 298 K. This study provides guidance for the design of adsorbents aimed at separation systems with similar kinetic diameter.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.39
DOI:
10.1002/ange.202208756
Language:
English
Publisher:
Wiley
Publication Date:
2022
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