Nanospace Engineering of Metal-Organic Frameworks through Dynamic Spacer Installation of Multifunctionalities for Efficient Separation of Ethane from Ethane/Ethylene Mixtures.
Angew Chem Int Ed Engl
; 60(17): 9680-9685, 2021 Apr 19.
Article
em En
| MEDLINE
| ID: mdl-33529471
ABSTRACT
Herein, a dynamic spacer installation (DSI) strategy has been implemented to construct a series of multifunctional metal-organic frameworks (MOFs), LIFM-61/31/62/63, with optimized pore space and pore environment for ethane/ethylene separation. In this respect, a series of linear dicarboxylic acids were deliberately installed in the prototype MOF, LIFM-28, leading to a dramatically increased pore volume (from 0.41 to 0.82â
cm3 g-1 ) and reduced pore size (from 11.1×11.1â
Å2 to 5.6×5.6â
Å2 ). The increased pore volume endows the multifunctional MOFs with much higher ethane adsorption capacity, especially for LIFM-63 (4.8â
mmol g-1 ), representing nearly three times as much ethane as the prototypical counterpart (1.7â
mmol g-1 ) at 273â
K and 1â
bar. Meanwhile, the reduced pore size imparts enhanced ethane/ethylene selectivity of the multifunctional MOFs. Theoretical calculations and dynamic breakthrough experiments confirm that the DSI is a promising approach for the rational design of multifunctional MOFs for this challenging task.
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MEDLINE
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article