Synthesis of NaY zeolite on preformed kaolinite spheres. Evolution of zeolite content and textural properties with the reaction time

• Published in: Industrial & engineering chemistry research 1993-04, Vol.32 (4), p.751-752
• Main Authors: Basaldella, Elena I, Bonetto, Rita, Tara, Juan C
• Format: Article
• Language: English
• Subjects: ALKALI METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ALUMINIUM OXIDES; ALUMINIUM SILICATES; CATALYSTS; CATALYTIC CRACKING; CHALCOGENIDES; CHEMICAL COMPOSITION; CHEMICAL REACTIONS; Chemistry; CRACKING; CRYSTAL STRUCTURE; DECOMPOSITION; Exact sciences and technology; General and physical chemistry; INORGANIC ION EXCHANGERS; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ION EXCHANGE MATERIALS; Ion-exchange; KAOLINITE; MATERIALS; MINERALS; OXIDES; OXYGEN COMPOUNDS; POROSITY; PYROLYSIS; SILICATE MINERALS; SILICATES; SILICON COMPOUNDS; SILICON OXIDES; SODIUM COMPOUNDS; Surface physical chemistry; SYNTHESIS; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS 400201 > Chemical & Physicochemical Properties; YTTRIUM COMPOUNDS; ZEOLITES; Zeolites: preparations and properties
• ISSN: 0888-5885; 1520-5045
• DOI: 10.1021/ie00016a025

The synthesis of NaY zeolite was carried out on fired kaolinite microspheres. Changes in porosity, chemical composition, and crystallinity of the solid show zeolite growth on both internal and external microsphere surfaces. It was also observed that, as a consequence of the alkaline treatment, the SiO[sub 2]/Al[sub 2]O[sub 3] ratio in the solid diminishes prior to the appearance of the zeolite, but increases when the zeolite begins to crystallize.