Eliomar Pivante Céleri, Carmem Cícera Maria da Silva, Valdemar Lacerda Jr, Audrei Giménez Barañano
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Synthesis of Sodalite Zeolite from Alkaline Fusion of Kaolin and Crystallization at Low Temperature and Ambient Pressure
In this study, a sodalite-type zeolite (SOD) was synthesized through the alkaline fusion of kaolin and crystallized under ambient pressure conditions, without the need for autoclaves and high temperatures. The influence of the ratio between fused kaolin and water (g/mL) during crystallization was evaluated. The ratio of fused kaolin with NaOH to water at 1:10 g/mL resulted in the synthesis of zeolite with higher relative crystallinity (70.99%), which was affected by the concomitant formation of thermonatrite phase. Additionally, the zeolite showed a Si/Al ratio of 0.95 and Na/Al ratio of 1.00, and the aluminum atoms exhibited a configuration of perfect tetrahedra. Due to the absence of octahedral aluminum in the zeolitic structure and the charge-balancing cations being Na+ ions, the zeolite presented itself as a basic solid.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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