An Aqueous-Based Synthesis of Flower-Like Hydroxy Sodalite Particles in the Presence of Cetyltrimethylammonium bromide
Hydroxy sodalite (HS) particles were synthesized hydrothermally at 90°C for 10 h in the presence of cetyltrimethylammonium bromide (CTAB) and other aqua-based precursor materials like sodium aluminate, sodium metasilicate, and water. Crystalline phases and microstructures of the synthesized particles were studied by X-ray diffraction and field emission scanning electron microscopy, respectively. The effect of CTAB concentrations on the crystallinity and morphology of the synthesized particles was investigated. Thread-ball like HS particles along with some cube-shaped zeolite A were obtained in the presence of 0–0.5 mM CTAB while flower-like HS particles were observed in the presence of 1–5 mM of CTAB concentrations. With increase in CTAB concentration, HS phase increased significantly, and phase pure HS particles resulted for 3 and 5 mM of CTAB concentrations. A mechanism for the formation of flower-like HS particles was also proposed.
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Document Type: Research Article
Affiliations: Sol–Gel Division, Central Glass and Ceramic Research Institute (CSIR), Kolkata 700 032, India
Publication date: 2011-06-01