Naslov
The study of formtion of chabazite zeolite using FAU-type crystals as starting material

Autori
Palčić, Ana ; Jaber, Maguy ; Casale, Sandra ; Vicente, Aurelie ; Fernandez, Christian ; Clet, Guillaume ; Bronić, Josip ; Valtchev ; Valentin

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

Izvornik
Proceedings of the 6th Croatian-Slovenian-Serbian Symposium on Zeolites / Antonić Jelić, Tatjana ; Bronić, Josip - Zagreb : Hrvatska zeolitna udruga (HZU), 2015, 41-44

ISBN
978-953-55373-4-2

Skup
Croatian-Slovenian-Serbian Symposium on Zeolites (6 ; 2015)

Mjesto i datum
Šibenik, Hrvatska, 01.10.2015. - 03.10.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
FAU, CHA, intrazeolite conversion, mechanism, crystallization

Sažetak
CHA-type zeolite is one of the most important zeolites that found application in important industrial processes and exhaust gas treatment. The simplest way to obtain aluminosilicate CHA is to transform zeolite Y under hydrothermal conditions. However, the mechanism of hydrothermal transformation of one zeolite framework type into another is not yet well understood. Herein, we report on the conversion of commercial zeolite Y (FAU) into chabazite, in KOH solution at 100 °C. The reaction course was followed using powder X-ray diffraction, Raman and NMR spectroscopy, scanning and transmission electron microscopy as well as dynamic light scattering technique. The set of experimental data pointed out that the zeolite transformation is a solution mediated process and an amorphous phase is the intermediate between FAU-type and CHA-type zeolite. The results obtained in this study shed a new light in the mechanism of the CHA formation and contribute in the understanding of the processes taking place during zeolite-zeolite conversion.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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