Naslov
The sorption equilibria in natural zeolite-aqueous solutions system

Autori
Perić, Jelena ; Trgo, Marina ; Cerjan-Stefanović, Štefica

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Zeolites and Mesoporous Materials at the Dawn of the 21st Century, Studies in Surface Science and Catalysis

Urednik/ci
Galarneu, A. ; Di Renzo, F. ; Fajula, F. ; Vedrine, J.

Izdavač
Elsevier

Grad
Amsterdam : London

Godina
2001

Raspon stranica
243-243

ISBN
978-0-444-50238-6

Ključne riječi
natural zeolite, sorption, Zn-ions

Sažetak
Equilibrium properties of the hydrolysis and ion exchange process have been examined in natural and pre-treated zeolite-clinoptilolite by measuring the concentration of exchangeable Na^+, K^+, Ca^2+ and Mg^2+ ions with time in the liquid phase. The analysis of the relation of concentrations of ionic species leaving the zeolite and those entering the zeolite structure (H^+, Zn^2+) has found this process to be a non-stoichiometric one.The established non-stoichiometry of the overall mass transfer process through the outer and inner surface of zeolite particles is due to the strength of the bond of exchangeable ions in the structure, as a phenomenon of sorption. The sorption takes place on characteristic locations on the zeolite particle surface, which has been confirmed by SEM images and EDX analysis.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA