Na2CO3-based sorbents coated on metal foil: CO2 capture performance

作者：Kondakindi Rajender R^*; McCumber Gregory; Aleksic Snezana; Whittenberger William; Abraham Martin A

来源：International Journal of Greenhouse Gas Control, 2013, 15: 65-69.

DOI：10.1016/j.ijggc.2013.01.038

• Carbonate
• CO2 capture
• Metal foil
• Durability

The release of carbon dioxide from fossil fuel combustion into the atmosphere is one of the leading causes of global climate change. The existing technologies for the capture of CO2 suffer from various drawbacks creating an opportunity for the development of new technologies. In this investigation, sodium-based sorbents were prepared and evaluated for performance in CO2 sorption. A series of Na2CO3-based sorbents was coated onto metal foils. The loading of Na2CO3 was maintained in the range of 25-40 wt.% on Al2O3. The performance of these sorbents was tested in a fixed-bed reactor at various absorption temperatures and at various water concentrations. To compare the performance of the sorbent coated metal foils, a series of Na2CO3/Al2O3 powder sorbents was also prepared by impregnation method with the same concentration of Na2CO3 as in the case of foil samples. In general, sorbent powders showed better performance compared to those of foil samples, but 35% Na2CO3/Al2O3 sorbent coated on foil showed highest performance (similar to 7.7 mol of CO2/kg of Na2CO3). This sorbent was also investigated for 500 cycles to evaluate the stability of the sorbent. Published by Elsevier B.V.

• 出版日期2013-7