Abstract
High-temperature CO2 sorption has been investigated as a new CO2 capture technology, and the development of high-temperature CO2 sorbents is critically important for the realization of this technology. In this study, K-Mg double salt-based sorbents were synthesized using a new pH-controlled precipitation method and the prepared sorbents were tested for medium high (intermediate) temperature CO2 sorption. In the new method for the synthesis of K-Mg double salt-based sorbents, the pH of the reagent solution was controlled by adding K2CO3 and/or KOH, resulting in varied ratios of different components in the sorbent. The CO2 sorption ability was enhanced in K-Mg double salt-based sorbents synthesized using the new pH-controlled method compared to the samples synthesized by the conventional precipitation method. The newly prepared K-Mg double salt-based sorbents had a high CO2 sorption uptake of up to 2.09 mol kg-1 at 300 °C and 1 bar. In addition, they showed fast sorption kinetics and good cyclic stability during multiple sorption/desorption procedures.
| Original language | English |
|---|---|
| Pages (from-to) | 439-446 |
| Number of pages | 8 |
| Journal | Chemical Engineering Journal |
| Volume | 294 |
| DOIs | |
| Publication status | Published - 2016 Jun 15 |
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Keywords
- Double salt-based sorbent
- Intermediate-temperature CO
- PH-controlled precipitation synthesis
- Sorption
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
- Industrial and Manufacturing Engineering
- Environmental Chemistry
Cite this
Effect of pH-controlled synthesis on the physical properties and intermediate-temperature CO2 sorption behaviors of K-Mg double salt-based sorbents. / Lee, Chan Hyun; Kwon, Hyuk Jae; Lee, Hyun Chul; Kwon, Soonchul; Jeon, Sang Goo; Lee, Ki Bong.
In: Chemical Engineering Journal, Vol. 294, 15.06.2016, p. 439-446.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of pH-controlled synthesis on the physical properties and intermediate-temperature CO2 sorption behaviors of K-Mg double salt-based sorbents
AU - Lee, Chan Hyun
AU - Kwon, Hyuk Jae
AU - Lee, Hyun Chul
AU - Kwon, Soonchul
AU - Jeon, Sang Goo
AU - Lee, Ki Bong
PY - 2016/6/15
Y1 - 2016/6/15
N2 - High-temperature CO2 sorption has been investigated as a new CO2 capture technology, and the development of high-temperature CO2 sorbents is critically important for the realization of this technology. In this study, K-Mg double salt-based sorbents were synthesized using a new pH-controlled precipitation method and the prepared sorbents were tested for medium high (intermediate) temperature CO2 sorption. In the new method for the synthesis of K-Mg double salt-based sorbents, the pH of the reagent solution was controlled by adding K2CO3 and/or KOH, resulting in varied ratios of different components in the sorbent. The CO2 sorption ability was enhanced in K-Mg double salt-based sorbents synthesized using the new pH-controlled method compared to the samples synthesized by the conventional precipitation method. The newly prepared K-Mg double salt-based sorbents had a high CO2 sorption uptake of up to 2.09 mol kg-1 at 300 °C and 1 bar. In addition, they showed fast sorption kinetics and good cyclic stability during multiple sorption/desorption procedures.
AB - High-temperature CO2 sorption has been investigated as a new CO2 capture technology, and the development of high-temperature CO2 sorbents is critically important for the realization of this technology. In this study, K-Mg double salt-based sorbents were synthesized using a new pH-controlled precipitation method and the prepared sorbents were tested for medium high (intermediate) temperature CO2 sorption. In the new method for the synthesis of K-Mg double salt-based sorbents, the pH of the reagent solution was controlled by adding K2CO3 and/or KOH, resulting in varied ratios of different components in the sorbent. The CO2 sorption ability was enhanced in K-Mg double salt-based sorbents synthesized using the new pH-controlled method compared to the samples synthesized by the conventional precipitation method. The newly prepared K-Mg double salt-based sorbents had a high CO2 sorption uptake of up to 2.09 mol kg-1 at 300 °C and 1 bar. In addition, they showed fast sorption kinetics and good cyclic stability during multiple sorption/desorption procedures.
KW - Double salt-based sorbent
KW - Intermediate-temperature CO
KW - PH-controlled precipitation synthesis
KW - Sorption
UR - http://www.scopus.com/inward/record.url?scp=84961114084&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961114084&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2016.03.003
DO - 10.1016/j.cej.2016.03.003
M3 - Article
AN - SCOPUS:84961114084
VL - 294
SP - 439
EP - 446
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -