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Zeolites Na-A and Na-X were successfully synthesized from kaolin and obsidian, respectively, following the alkaline fusion method. Raw materials were hydrothermally activated with NaOH to synthesize zeolites Na-A and Na-X. The transformation of the starting materials into zeolites has been evaluated by powder X-ray diffraction, scanning  electron  microscopy  and  Fourier  transformed  infrared  spectroscopy  to  elucidate  the  crystallization  process of zeolites. The use of low cost materials in zeolite synthesis become an area of important interest and research, playing an active role in promoting technological advances, research and technology transfer related to the production of zeolytic materials under well-optimized experimental conditions.

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Ríos CA, Williams CD, Castellanos OM. Crystallization of low silica Na-A and Na-X zeolites from transformation of kaolin and obsidian by alkaline fusion. inycomp [Internet]. 2012 Jul. 15 [cited 2024 Nov. 22];14(2):125-37. Available from: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/2661