Naslov
Relation of the Aged Gels Microstructure on the Zeolite A Particulate Properties

Autori
Palčić, Ana ; Bosnar, Sanja ; Bosnar, Damir ; Kontrec, Jasminka ; Bronić, Josip

Izvornik
Acta chimica Slovenica (1318-0207) 62 (2015); 130-135

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Zeolite A; gel microstructure; FTIR; PALS; DTG

Sažetak
The microstructure of the starting hydrogel has extremely important role in the synthesis of the microporous materials. Due to the fact that very limited number of experimental methods (techniques) can be used for gel analysis, there are still a lot of missing information about the processes on molecular level, which occur before and during the nuclei formation. In this paper, various methods were used in characterization of pretreated (aged) hydrogel before the process of its hydrothermal transformation to zeolite A. The results obtained from different techniques (FTIR, PALS, BET, DTG) show the changes in chemical composition and in microstructure of the solid phase, indicating that the structure of the ordered phase (potential nuclei) within gel matrix (completely amorphous according to PXRD patterns) is rather of different structural units typical for FAU and SOD (or their mixture) than the final product (LTA) only!

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA