Rational Design of the Polymeric Amines in Solid Adsorbents for Postcombustion Carbon Dioxide Capture

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 135
  • Download : 0
Substantial efforts have been made to increase the CO2 working capacity of amine adsorbents for an efficient CO2 capture. However, the more important metric for assessing adsorbents is the regeneration heat required for capturing a fixed amount of CO2. In this work, we synthesized polyethyleneimine (PEI)/SiO, adsorbents functionalized with various epoxides. This provided adsorbents with six different amine structures showing various CO2/H2O adsorption properties. Our studies revealed that the CO2 working capacity was not a decisive factor in determining the regeneration heat required for CO2 capture. This is because the benefit of large CO2 working capacity was canceled out by the difficulty of CO2 desorption. Instead, the suppression of H2O co-adsorption was critical for reducing the regeneration heat because substantial latent heat is required for H2O desorption. Consequently, the PEI/SiO2 functionalized with 1,2epoxybutane required a much lower regeneration heat (2.66 GJ tCO(2)1) than the conventional PEI/SiO2 (4.03 GJ tCO(2)-1) because of suppressed H2O co-adsorption as well as moderately high CO2 working capacity.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-07
Language
English
Article Type
Article
Citation

ACS APPLIED MATERIALS & INTERFACES, v.10, no.28, pp.23825 - 23833

ISSN
1944-8244
DOI
10.1021/acsami.8b05988
URI
http://hdl.handle.net/10203/244836
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0