Wet impregnation of a commercial low cost silica using DETA for a fast post-combustion CO2 capture process

C.F. Martin, M.B. Sweatman, S. Brandani, X. Fan

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This work presents an economic and non-tedious method to manufacture low cost, but effective adsorbents for CO2 capture through impregnating DETA to a low cost, porous silica gel. The results have demonstrated that the silica gel support, impregnated by low molecular-weight amine is stable and work very well at a temperatures up to 130 °C. The developed adsorbent has a fast adsorption kinetics and can be regenerated at a low temperature. This will significantly reduce the energy used to regenerate CO2, therefore the energy penalty of the capture/separation process. The effect of amine loading on the textural properties, thermal stability, and CO2 capture performance of the impregnated silica gel is also reported in this paper. 10% amine loading gives the best porosity, stability and the highest adsorption capacity.
Original languageEnglish
Pages (from-to)1705-1721
Number of pages17
JournalApplied Energy
Early online date12 Oct 2016
Publication statusPublished - 1 Dec 2016



  • CO2 capture
  • adsorption
  • amine
  • DETA
  • impregnation
  • thermal stability

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