Adsorption of carbon dioxide on montmorillonites of different ion exchange forms

Autor:	S. Z. Muminov, A. A. Pribylov, L. G. Shekhovtsova, I. A. Kalinnikova
Rok vydání:	2010
Předmět:	Ion exchange Sodium Initial sample Inorganic chemistry chemistry.chemical_element Surfaces and Interfaces Ion chemistry.chemical_compound Colloid and Surface Chemistry Adsorption Montmorillonite chemistry Carbon dioxide Pyridinium Physical and Theoretical Chemistry
Zdroj:	Colloid Journal. 72:417-422
ISSN:	1608-3067 1061-933X
Popis:	The adsorption isotherms of carbon dioxide are measured at 303, 343, 373, and 400 K and pressure P ranged from 0.1 to 6 MPa for three montmorillonites, i.e., the initial sample in the sodium form and two ion exchanged samples in pyridinium and polyhydroxyaluminum forms. It is shown that the linear character of the isosteres of CO2 adsorption is retained for polyhydroxyaluminum and sodium montmorillonites, a deviation of the adsorption isosteres from linearity is observed for pyridinium montmorillonite at high temperatures (373–400 K) and high surface fillings. The differential excess entropies of CO2 adsorbate are calculated for different fillings of montmorillonites. Using various approaches, the adsorption volumes for the systems studied are calculated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::692e518058702dc16848de45dff8b4a0 https://doi.org/10.1134/s1061933x10030166 Zobrazit plný text záznamu Plný text ve formátu PDF