Epoxide-functionalization of polyethyleneimine for synthesis of stable carbon dioxide adsorbent in temperature swing adsorption

Woosung Choi, Kyungmin Min, Chaehoon Kim, Young Soo Ko, Jae Wan Jeon, Hwimin Seo, Yong-Ki Park and Minkee Choi ()
Additional contact information
Woosung Choi: Korea Advanced Institute of Science and Technology
Kyungmin Min: Korea Advanced Institute of Science and Technology
Chaehoon Kim: Korea Advanced Institute of Science and Technology
Young Soo Ko: Kongju National University
Jae Wan Jeon: Kongju National University
Hwimin Seo: Center for Convergent Chemical Process, Korea Research Institute of Chemical Technology
Yong-Ki Park: Center for Convergent Chemical Process, Korea Research Institute of Chemical Technology
Minkee Choi: Korea Advanced Institute of Science and Technology

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Amine-containing adsorbents have been extensively investigated for post-combustion carbon dioxide capture due to their ability to chemisorb low-concentration carbon dioxide from a wet flue gas. However, earlier studies have focused primarily on the carbon dioxide uptake of adsorbents, and have not demonstrated effective adsorbent regeneration and long-term stability under such conditions. Here, we report the versatile and scalable synthesis of a functionalized-polyethyleneimine (PEI)/silica adsorbent which simultaneously exhibits a large working capacity (2.2 mmol g−1) and long-term stability in a practical temperature swing adsorption process (regeneration under 100% carbon dioxide at 120 °C), enabling the separation of concentrated carbon dioxide. We demonstrate that the functionalization of PEI with 1,2-epoxybutane reduces the heat of adsorption and facilitates carbon dioxide desorption (>99%) during regeneration compared with unmodified PEI (76%). Moreover, the functionalization significantly improves long-term adsorbent stability over repeated temperature swing adsorption cycles due to the suppression of urea formation and oxidative amine degradation.

Date: 2016
References: Add references at CitEc
Citations: View citations in EconPapers (8)

Downloads: (external link)
https://www.nature.com/articles/ncomms12640 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12640

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms12640

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().