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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References
N. V. Kel'tsev, Osnovy adsorbtsionnoi tekhniki [Foundations of Adsorption Technique], Khimiya, Moscow, 1984, 591 pp. (in Russian).
M. Anand, J. Hufton, S. Mayorga, S. Nataraj, S. Sircar, and T. Gaffney, Proc. US DOE Hydrogen Program Rev., National Renewable Energy Laboratory, Golden, Colo, 1996, 1, 537.
H. Hayashi, J. Taniuchi, N. Furuyashiki, S. Sugiyama, S. Hirano, N. Shigemoto, and T. Nonaka, Ind. Eng. Chem. Res., 1998, 37, 185.
J. R. Hufton, S. Mayorga, and S. Sircar, AIChE J., 1999, 45, 248.
W. E. Waldron, J. R. Hufton, and S. Sircar, AIChE J., 2001, 47, 1477.
JP Pat. 08040715, 09000876; US Pat. 5656064; EP Pat. 00922482.
S. Hirano, N. Shigemoto, S. Yamada, and H. Hayashi, Bull. Chem. Soc. Jpn., 1995, 68, 1030.
H. Hayashi, S. Hirano, N. Shigemoto, and S. Yamada, J. Chem. Soc. Jpn., Chem. Ind. Chem., 1995, 12, 1006.
A. G. Okunev, V. E. Sharonov, and Yu. I. Aristov, React. Kinet. Cat. Lett., 2000, 71, 355.
V. E. Sharonov, E. A. Tyshchishchin, E. M. Moroz, A. G. Okunev, and Yu. I. Aristov, Zh. Prikl. Khim., 2001, 74, 401 [Russ. J. Appl. Chem., 2001, 74 (Engl. Transl.)].
A. G. Okunev, V. E. Sharonov, E. M. Moroz, I. G. Danilova, T. A. Krieger, and Yu. I. Aristov, Chem. Ing. Tech., 2001, 72, 736.
A. G. Okunev, V. E. Sharonov, A. V. Gubar', T. A. Kriger, I. G. Danilova, E. M. Moroz, V. N. Parmon, and Yu. I. Aristov, Mater. III Vseros. konf. "Poliyadernye sistemy i aktivatsiya CO 2" [Proc. III All_Russian Conf. "Polynuclear Systems and CO 2 Activation] (Cheboksary, August 20–25, 2001), 2001, 30 (in Russian).
T. A. Kriger, L. M. Plyasova, and T. M. Yurieva, Mater. Sci. Forum, 2000, 321–324, 386.
V. V. Malakhov and A. A. Vlasov, Kinet. Katal., 1995, 36, 503 [Kinet. Catal., 1995, 36 (Engl. Transl.)].
V. N. Makatun and L. N. Shcheglov, Usp. Khim., 1972, 41, 1937 [Russ. Chem. Rev., 1972, 41, 905 (Engl. Transl.)].
V. M. Ramm, Absorbtsiya gazov [Gas Absorption], Khimiya, Moscow, 1976, 655 pp. (in Russian).
N. P. Tomilov, A. S. Berger, and A. I. Boikova, Zh. Neorg. Khim., 1969, 14, 674 [J. Inorg. Chem. USSR, 1969, 14 (Engl. Transl.)].
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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