Synthesis and Study of Calcination Temperature Influence on the Change of Structural Properties of the LTA Zeolite
Rasayan Journal of Chemistry 2016
karima Menad, Ahmed Feddag, Kristaps Rubenis

In this study, a Lind Type A zeolite is synthesized in a water bath and it was characterized by X-ray diffractions and scanning electron microscopy. The synthetic zeolite was calcined at various temperatures from 300 °C to 1300 °C. The as-calcined samples were characterized by Brunauer–Emmett–Teller analysis (BET). The mass measurement of calcined zeolites and the BET analysis showed that the increasing temperature destroyed the original framework structure and porosity of zeolite (over 800 °C). It was found that the calcination temperature influenced the surface area, micro-meso-porous volume and final zeolite amount but it retained the same pore size distribution. The sample calcined at 700 °C presented the best performance because of its highest specific surface area and porous volume. Calcination temperatures having a value less than 800 ° C produce zeolites with large micro-pores having a size of 1.8 to 2 nm and medium meso-pores with size of 3 nm to 10 nm. The meso-porous volume was found greater than that of micro-porous.


Keywords
Calcination, LTA zeolite, Micro-pores, Porous volume, Surface area

Menad, K., Feddag, A., Rubenis, K. Synthesis and Study of Calcination Temperature Influence on the Change of Structural Properties of the LTA Zeolite. Rasayan Journal of Chemistry, 2016, Vol.9, No.4, pp.788-797. ISSN 0974-1496. e-ISSN 0976-0083.

Publication language
English (en)
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