Naslov
Structural properties and crystallization kinetics of leucite and kalsilite from aluminosilicate amorphous precursors

Autori
Buljan, Iva ; Kosanović, Cleo ; Subotić, Boris ; Novak Tušar, Nataša ; Ristić, Alenka ; Gabrovšek, Roman ; Kaučič, Venčeslav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 3rd Croatian-Slovenian Symposium on Zeolites / Antonić Jelić, Tatjana ; Zabukovec Logar, Nataša - Zagreb : Institut Ruđer Bošković, 2010, 47-50

Skup
3rd Croatian-Slovenian Symposium on Zeolites

Mjesto i datum
Trogir, Hrvatska, 16.09.2010. - 17.09.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Kinetics ; Crystallization ; Leucite ; Kalsilite ; Amorphous aluminosilicates

Sažetak
Kinetics of isothermal crystallization of tetragonal modification of leucite and hexagonal modification of kalsilite from differently prepared precipitated amorphous aluminosilicate precursors were investigated at three different temperatures. Kinetic analysis of the transformation processes have shown that the crystallization of leucite occurs in the same way as the crystallization of kalsilite and follows a pseudo-zero-rate kinetic equation. The apparent activation energies calculated by the Arrhenius equation were 373 kJ/mol for the crystallization of kalsilite and 403 kJ/mol for the crystallization of leucite, which is explained by different microstructure of the prepared precursors.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA