Effect of the aging temperature on the synthesis of small crystal LTA zeolites

Abstract

Small crystal Linde Type A (LTA) zeolites were synthesised by a hydrothermal method without any organic additive at different aging temperature for 24 h. The as-synthesised samples were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy. The experimental results showed that the aging temperature was crucial to the crystallinity and morphology of the synthesised zeolite crystals. Samples aged at 30°C presented an average crystal size of 500 nm.

Keywords:

• LTA zeolites
• Small crystals
• Hydrothermal method
• Aging temperature

Acknowledgements

The authors are grateful to the financial support of Quartermaster Equipment Research Institute of General Logistics Department.