Citrate Sol-Gel Method for the Preparation of Sodium Zirconate for High-Temperature CO2 Sorption
- Authors
- Jo, Hyun Geun; Yoon, Hyung Jin; Lee, Chan Hyun; Lee, Ki Bong
- Issue Date
- 6-4월-2016
- Publisher
- AMER CHEMICAL SOC
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.55, no.13, pp.3833 - 3839
- Indexed
- SCIE
SCOPUS
- Journal Title
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
- Volume
- 55
- Number
- 13
- Start Page
- 3833
- End Page
- 3839
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88934
- DOI
- 10.1021/acs.iecr.5b04915
- ISSN
- 0888-5885
- Abstract
- The use of sorbents capable of capturing high-temperature CO2 increases the overall efficiency of CO2 removal processes, without the need for cooling the flue gases. In this study, Na2ZrO3 for high-temperature CO2 sorption was newly prepared using a citrate sol-gel method. The characteristics and CO2 sorption behavior of the prepared Na2ZrO3 were examined by field-emission scanning electron microscopy, N-2 adsorption analysis, X-ray diffraction, and thermogravimetric analysis, and compared with those of Na2ZrO3 synthesized using a conventional solid-state method. Na2ZrO3 could be synthesized at lower temperature by using the citrate sol-gel method compared to the case of solid-state method. Na2ZrO3 prepared using the citrate sol-gel method showed excellent CO2 sorption performance: high sorption capacity (17.5-21.0 wt % at 823 K and 1 bar), fast sorption kinetics, and good cycling stability. Kinetic analysis was also conducted by fitting the CO2 sorption behavior to the double exponential model.
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