Kinetics of CO2 Adsorption/Desorption of Polyethyleneimine-Mesoporous Silica

Jaber Al Marri, Yussuf O. Kuti, Majeda Khraisheh, Anand Kumar, Mahmoud M. Khader

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The kinetics of adsorption of CO2 on solid sorbents based on polyethyleneimine/mesoporous silica (PEI/MPS) was studied by following the mass gain during CO2 flow. Linear (PEI-423) and branched (PEI-10k) polymers were studied. The solid sorbents were synthesized by impregnating the PEI into MPS foam. The kinetics of adsorption was fitted with a double-exponential model. In contrast, the desorption process obeyed first-order kinetics. The activation energy of desorption of PEI-423 was lower than that of PEI-10k, presumably because the branched polymer required more energy to expose its nitrogen to CO2. To increase the CO2 sorption capacity, the MPS was treated with nonionic surfactant materials prior to impregnation with PEI. This also lowered the maximum sorption temperature and desorption activation energies.

Original languageEnglish
Pages (from-to)1802-1809
Number of pages8
JournalChemical Engineering and Technology
Volume40
Issue number10
DOIs
Publication statusPublished - 1 Oct 2017
Externally publishedYes

Fingerprint

Polyethyleneimine
Polyetherimides
Silicon Dioxide
Desorption
Silica
Adsorption
Kinetics
Sorbents
Sorption
Polymers
Activation energy
Nonionic surfactants
Impregnation
Foams
Nitrogen

Keywords

  • Adsorption
  • Carbon dioxide
  • Desorption
  • Mesoporous silica
  • Polyethyleneimine

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Kinetics of CO2 Adsorption/Desorption of Polyethyleneimine-Mesoporous Silica. / Al Marri, Jaber; Kuti, Yussuf O.; Khraisheh, Majeda; Kumar, Anand; Khader, Mahmoud M.

In: Chemical Engineering and Technology, Vol. 40, No. 10, 01.10.2017, p. 1802-1809.

Research output: Contribution to journalArticle

Al Marri, Jaber ; Kuti, Yussuf O. ; Khraisheh, Majeda ; Kumar, Anand ; Khader, Mahmoud M. / Kinetics of CO2 Adsorption/Desorption of Polyethyleneimine-Mesoporous Silica. In: Chemical Engineering and Technology. 2017 ; Vol. 40, No. 10. pp. 1802-1809.
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