Performance of immobilized tertiary amine solid sorbents for the capture of carbon dioxide
The capture of carbon dioxide (CO2) from a simulated flue gas stream was achieved by utilizing immobilized tertiary amine solid sorbents. The tertiary amine immobilized in these solid substrates was 1, 8 Diazabicyclo-[5.4.0]-undec-7-ene (DBU) and it has the stoichiometric capability of capturing carbon dioxide at a 1:1 R-NH2:CO2 molar ratio. This is a unique feature compared to other primary and secondary amines which capture CO2 at a 2:1 molar ratio, thus making the immobilized DBU solid sorbents competitive with existing commercially available sorbents and liquid amine-based capture systems. The immobilized DBU solid sorbents prepared in this study exhibit acceptable CO2 capture capacities of 3.0 mol CO2/kg sorbent at 298 K; however, at the critical operational temperature of 338 K, the capacity was reduced to 2.3 mol/kg sorbent. The DBU sorbents did exhibit acceptable stability over the adsorption/desorption temperature range of 298–360 K based on XPS and TGA analyses.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- DOE Contract Number:
- None cited
- OSTI ID:
- 935174
- Report Number(s):
- DOE/NETL-IR-2008-236; NETL-TPR-2228; TRN: US200815%%203
- Journal Information:
- International Journal of Greenhouse Gas Control, Vol. 2, Issue 1; ISSN 1750-583
- Publisher:
- Elsevier Ltd.
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Study in Process Modeling of the Startup of Fuel Cell/Gas Turbine Hybrid Systems
Parametric study of solid amine sorbents for the capture of carbon dioxide