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Sorption of carbon dioxide by the composite sorbent “potassium carbonate in porous matrix”

Russian Chemical Bulletin volume 52, pages 359–363 (2003)Cite this article

Abstract

Sorption of CO2 in the presence of water vapor by the K2CO3—γ-Al2O3 composite sorbent was studied by IR spectroscopy in situ, X-ray diffraction analysis, and the differentiating dissolution method and reasons for a decrease in its dynamic capacity are given. The samples containing K2CO3·1.5H2O in pores are characterized by the maximal dynamic capacity. A mechanism for CO2 sorption was proposed, which qualitatively explains the obtained dependence of the capacity on the water content in the composite sorbent. A high dynamic capacity can be maintained by regeneration of the sorbents by water vapor at 170 °N. The capacity of the sorbents decreases during the first 10 sorption—regeneration cycles due to the formation of an inactive phase of potassium aluminum carbonate.

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Authors and Affiliations

  1. G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5 prosp. Akad. Lavrent"eva, 630090, Novosibirsk, Russian Federation

    A. G. Okunev, V. E. Sharonov, A. V. Gubar", I. G. Danilova, E. A. Paukshtis, E. M. Moroz, T. A. Kriger, V. V. Malakhov & Yu. I. Aristov

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  1. A. G. Okunev
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  2. V. E. Sharonov
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  3. A. V. Gubar"
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  4. I. G. Danilova
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  5. E. A. Paukshtis
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  6. E. M. Moroz
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  7. T. A. Kriger
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  8. V. V. Malakhov
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  9. Yu. I. Aristov
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Okunev, A.G., Sharonov, V.E., Gubar", A.V. et al. Sorption of carbon dioxide by the composite sorbent “potassium carbonate in porous matrix”. Russian Chemical Bulletin 52, 359–363 (2003). https://doi.org/10.1023/A:1023450614383

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  • DOI: https://doi.org/10.1023/A:1023450614383

  • composite sorbent
  • chemisorption
  • carbon dioxide
  • potassium carbonate
  • IR spectroscopy in situ