Naslov
Preinvestigation of the Synthesis of the ZA small Crystals from Clear Solutions

Autori
Mužic, Ana ; Bronić, Josip ; Subotić, Boris

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Eleventh Slovenian-Croatian Crystallographic Meeting / Golobić, Amalija; Leban, Ivan; Meden Anton - Ljubljana : Univerza v Ljubljani, 2002, 44-44

Skup
Eleventh Slovenian-Croatian Crystallographic Meeting

Mjesto i datum
Bohinj, Slovenija, 27.06.2002. - 30.06.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Zeolite A; Small crystals; Synthesis; Clear solution

Sažetak
Synthesis of pure, very small crystals of zeolite NaA (ZA) without organic template is very interesting from commercial viewpoint of its use. In order to obtain pure ZA (especially without gel) starting mixture should be clear (criteria for clear solution was at least 24 h stability, without visible solid particles). In this work, we have investigated wide range of Na and Al content in starting mixture. Hydrothermal synthesis were made at two different temperatures 25 C and 80 C. Solid products were washed, dried and its phase composition was determined by X-ray diffraction. Diffractograms show that ZA was not obtained at any system at 25 C, and also that pure ZA can be synthesized at 80 C using following composition (oxyde form): 10 Na2O-0.3 Al2O3-SiO2-120 H2O.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA