Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI?Zeolite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F12%3A00379329" target="_blank" >RIV/61388955:_____/12:00379329 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/cplu.201200089" target="_blank" >http://dx.doi.org/10.1002/cplu.201200089</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cplu.201200089" target="_blank" >10.1002/cplu.201200089</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI?Zeolite

Popis výsledku v původním jazyce

Sodium and potassium forms of STI?zeolite synthesized with Si/Al ratios 15, 25, and 35 were characterized using X-ray powder diffraction and nitrogen adsorption at 77?K. 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?K. 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?zeolite with a Si/Al ratio of 15. The lowest values were found with both sodium and potassium forms of STI?zeolite having a Si/Al ratio of 35. Heats of adsorption of CO2 obtained for STI?zeolites 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?zeolites are lower by approximately 8?kJ?mol1 compared with heats of adsorption for FE

Název v anglickém jazyce

Adsorption of Carbon Dioxide on Sodium and Potassium Forms of STI?Zeolite

Popis výsledku anglicky

Sodium and potassium forms of STI?zeolite synthesized with Si/Al ratios 15, 25, and 35 were characterized using X-ray powder diffraction and nitrogen adsorption at 77?K. 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?K. 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?zeolite with a Si/Al ratio of 15. The lowest values were found with both sodium and potassium forms of STI?zeolite having a Si/Al ratio of 35. Heats of adsorption of CO2 obtained for STI?zeolites 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?zeolites are lower by approximately 8?kJ?mol1 compared with heats of adsorption for FE

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F08%2F0604" target="_blank" >GA203/08/0604: Pokročilé materiály na bázi molekulových sít pro adsorpci a uchovávání CO2 a H2</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ChemPlusChem

ISSN

2192-6506

e-ISSN

—

Svazek periodika

77

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

675-681

Kód UT WoS článku

000307401800008

EID výsledku v databázi Scopus

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