Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Pore Space Partition within a Metal-Organic Framework for Highly Efficient C2H2/CO2 Separation

Published

Author(s)

Yingxiang Ye, Zhenlin Ma, Rui-Biao Lin, Rajamani Krishna, Wei Zhou, Quanjie Lin, Zhangjing Zhang, Shengchang Xiang, Banglin Chen

Abstract

The pore space partition (PSP) approach has been employed to realize a novel porous MOF (FJU-90) with dual functionalities for the challenging C2H2/CO2 separation under ambient conditions. By virtue of a triangular ligand (Tripp = 2,4,6-tris-(4-pyridyl)pyridine), the cylindrical channels in the original FJU-88 have been partitioned into uniformly interconnected pore cavities, leading to the dramatically reduced pore apertures from 12.0 x 0.4 angstrom}2 to 5.4 x 5.1 angstrom}2. Narrowing down the pore sizes, the resulting activated FJU-90a takes up a very high amount of C2H2 of 180 cm3g-1 but much less of CO2 of 103 cm3 g-1 at 298 K and 1 bar, demonstrating it as the best porous MOF material for this C2H2/CO2 (50%:50%) separation in terms of the C2H2 gravimetric productivity, IAST calculations, molecular modeling studies, simulated and experimental breakthrough experiments comprehensively demonstrate that the pore space partition strategy is a very powerful approach to construct MOFs with dual functionalities for the challenging gas separation.
Citation
Journal of American Chemical Society
Volume
141
Issue
9

Keywords

Porous materials, Gas separation

Citation

Ye, Y. , Ma, Z. , Lin, R. , Krishna, R. , Zhou, W. , Lin, Q. , Zhang, Z. , Xiang, S. and Chen, B. (2019), Pore Space Partition within a Metal-Organic Framework for Highly Efficient C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> Separation, Journal of American Chemical Society, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=927568 (Accessed April 14, 2024)
Created March 13, 2019, Updated October 12, 2021