Citrate Sol-Gel Method for the Preparation of Sodium Zirconate for High-Temperature CO2 Sorption

Hyun Geun Jo, Hyung Jin Yoon, Chan Hyun Lee, Ki Bong Lee

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29 Citations (Scopus)


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, N2 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.

Original languageEnglish
Pages (from-to)3833-3839
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number13
Publication statusPublished - 2016 Apr 20

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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