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Title: 3D-printed monolithic porous adsorbents from a solution-processible, hypercrosslinkable, functionalizable polymer
Authors: Lee, Junghyun 
Chuah, Chong Yang
Tan, Wen See
Song, Juha
Bae, Tae-Hyun
Keywords: Engineering::Chemical engineering
Issue Date: 2022
Source: Lee, J., Chuah, C. Y., Tan, W. S., Song, J. & Bae, T. (2022). 3D-printed monolithic porous adsorbents from a solution-processible, hypercrosslinkable, functionalizable polymer. Chemical Engineering Journal, 427, 130883-.
Project: A1983c0031
Journal: Chemical Engineering Journal
Abstract: Solid adsorbents have been actively developed for energy-efficient gas separations including carbon capture and air purification. However, conventional particulate adsorbents often show ineffective mass transfer and significant pressure drop in practical operations, leading to a limited overall performance. As a potential solution to these issues, the development of three-dimensionally (3D) structured adsorbents has been proposed. Herein, we report a novel approach to design 3D monolithic adsorbents for CO2 separation via 3D printing of a processible polymer, which in turn can be transformed into a functional porous material via hypercrosslinking and amine-grafting. Importantly, such structure can be realized without an aid from binders or mechanical supports. Our adsorbents demonstrated a promising CO2 adsorption performance without experiencing any pressure drop under dynamic flow condition. The stability and regenerability, which are also important requirements for practical operations, were also successfully demonstrated through a repetitive adsorption–desorption cycling test in the presence of water vapor. We envisage that our approach can be applied in the development of structurally versatile adsorbents for various gas separation processes.
ISSN: 1385-8947
DOI: 10.1016/j.cej.2021.130883
Schools: School of Chemical and Biomedical Engineering 
Research Centres: Singapore Membrane Technology Centre 
Nanyang Environment and Water Research Institute 
Rights: © 2021 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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