|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Synthesis and Characterization of Sodalite and Cancrinita from Kaolin
||Fernanda Arruda Nogueira Gomes da Silva, Fabiano Passos, Karoline Ferreira, Adriana Felix, Carla Barbato, Karla Simões, Francisco Garrido, Luiz Carlos Bertolino, Danielle Costal Castro
|On-Site Speaker (Planned)
Cancrinite and sodalite are characterized by high capacity of adsorption due to its porous structure. The aim of this work is to use kaolin from Borborema-Seridó/Brazil as a source of aluminium and silicon to the hydrothermal synthesis of sodalite and cancrinite and to evaluate the best conditions to the formation of this phases and the transition between them for use as adsorbent. Therefore, kaolin was heated at 700 and 900ºC for 2h, then it was reacted with NaOH and Na2CO3 (150 to 230ºC, 30 to 270min). The most pure sodalite phase was obtained at 230ºC as well a kaolin:NaOH proportion and a NaOH:Kaolin proportion between synthesis time and NaOH amount. On the other hand, for cancrinite phase it is necessary a long time of synthesis, high kaolin:NaOH proportion and temperature of heat treatment (900ºC).
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