Optimization of Nanocrystals NaX Zeolite Synthesis with Different Silica Sources

Document Type: Research Paper



The effects of varying the silica source on synthesis of NaX zeolite crystals via conventional
hydrothermal method have been investigated. Five different silica sources were selected while
other parameters like Al source, reaction and aging time, SiO2/Al2O3 molar ratio and temperature
were same. The prepared products were characterized by XRD technique. The results showed
that different crystallites, different conversion rates and different amounts of impurity phase
in the synthesized NaX zeolite. For more evidence the best obtained powder of NaX zeolite
nanoparticles was checked by FTIR, SEM, TGA, and BET analysis. The corresponding sample
had a good agreement with standard IR peaks, octahedral nanocrystals of zeolite X, thermal
stability up to 800°C, surface area 751.88 m2/g and total pore Volume 0.3599 cm3/g respectively.
Therefore, it can be concluded that the use of different silica sources significantly influence the
synthesized products.