"[F2E3C959D255]" . "RIV/61388955:_____/12:00379329!RIV13-GA0-61388955" . . "Zukal, Arno\u0161t" . . "8" . "Kub\u016F, Martin" . "3"^^ . "2192-6506" . "Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI\u2005Zeolite"@en . "000307401800008" . "\u010Cejka, Ji\u0159\u00ED" . "Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI\u2005Zeolite"@en . "Zones, S. I." . "Sodium and potassium forms of STI\u2005zeolite synthesized with Si/Al ratios 15, 25, and 35 were characterized using X-ray powder diffraction and nitrogen adsorption at 77\u2005K. To obtain detailed information on the effect of alkali metal cations on CO2 adsorption, the temperature dependence of CO2 isotherms was investigated in the temperature range from 273 to 333\u2005K. Based on these data, isosteric heats of adsorption of CO2 were determined. It was found that the isosteric heat of CO2 adsorption attains the highest values on the sodium form of STI\u2005zeolite with a Si/Al ratio of 15. The lowest values were found with both sodium and potassium forms of STI\u2005zeolite having a Si/Al ratio of 35. Heats of adsorption of CO2 obtained for STI\u2005zeolites were discussed in detail and compared with those of FER, MFI, MEL, TUN, and IMF structural types. This comparison revealed that isosteric heats of adsorption of CO2 on STI\u2005zeolites are lower by approximately 8\u2005kJ\u2009mol1 compared with heats of adsorption for FER, MFI, MEL, TUN, and IMF zeolites composed of the eight- or/and ten-ring channel systems as well as STI\u2005zeolites. This effect was explained on the basis of stronger interaction of alkali metal cations with oxygen atoms of the zeolitic framework." . . . . . "Sodium and potassium forms of STI\u2005zeolite synthesized with Si/Al ratios 15, 25, and 35 were characterized using X-ray powder diffraction and nitrogen adsorption at 77\u2005K. To obtain detailed information on the effect of alkali metal cations on CO2 adsorption, the temperature dependence of CO2 isotherms was investigated in the temperature range from 273 to 333\u2005K. Based on these data, isosteric heats of adsorption of CO2 were determined. It was found that the isosteric heat of CO2 adsorption attains the highest values on the sodium form of STI\u2005zeolite with a Si/Al ratio of 15. The lowest values were found with both sodium and potassium forms of STI\u2005zeolite having a Si/Al ratio of 35. Heats of adsorption of CO2 obtained for STI\u2005zeolites were discussed in detail and compared with those of FER, MFI, MEL, TUN, and IMF structural types. This comparison revealed that isosteric heats of adsorption of CO2 on STI\u2005zeolites are lower by approximately 8\u2005kJ\u2009mol1 compared with heats of adsorption for FER, MFI, MEL, TUN, and IMF zeolites composed of the eight- or/and ten-ring channel systems as well as STI\u2005zeolites. This effect was explained on the basis of stronger interaction of alkali metal cations with oxygen atoms of the zeolitic framework."@en . "Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI\u2005Zeolite" . . . "I, P(GA203/08/0604)" . . . "10.1002/cplu.201200089" . "7"^^ . . . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . "121149" . . . . "Davis, T. M." . . "adsorption; carbon dioxide; zeolites"@en . "RIV/61388955:_____/12:00379329" . "ChemPlusChem" . "Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI\u2005Zeolite" . "77" . "5"^^ . . .