CO2 Sorption and Regeneration Properties of K2CO3/Al2O3-Based Sorbent at High Pressure and Moderate Temperature
Source abstract
Abstract
In this study, the CO2 sorption mechanisms and regeneration properties of alumina-based sorbent using K2CO3 loading under high-pressure and moderate temperature conditions were examined. To investigate the mechanism of CO2 sorption, a zirconium-based sorbent was compared with an alumina-based sorbent. The CO2 capture capacities of the PAI10, 20, 30, and 40 were 32.3, 63.0, 95.4, and 124.5 mg CO2/g sorbent, respectively. To investigate the CO2 sorption mechanism of an alumina-based sorbent, we performed XRD, TG/DTG, and FTIR analyses after CO2 sorption in the presence of 10 vol% CO2 and H2O each at 200 °C and 20 atm. For PAI10–40 sorbents, KHCO3 and KAl(CO3)(OH)2 phases were observed by TG/DTG and FTIR analysis. For PAI-x sorbents, it was confirmed that the captured CO2 is desorbed completely at a temperature below 400 °C at 20 atm.
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Research context
OpenAlex topics: Carbon Dioxide Capture Technologies · Chemical Looping and Thermochemical Processes · Adsorption and Cooling Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical Engineering, Kyungpook National University, Daegu 41566, Korea
JnK Co., Ltd., Daegu 41566, Korea
Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, USA
Research Institute of Advanced Energy Technology, Kyungpook National University, Daegu 41566, Korea
Funding
Ministry of Trade, Industry and Energy · National Research Foundation of Korea
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