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Solid transformation of zeolite NaA to sodalite

✍ Scribed by Lianhui Ding; Hong Yang; Parviz Rahimi; Oladipo Omotoso; Wally Friesen; Craig Fairbridge; Yu Shi; Siauw Ng

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
901 KB
Volume
130
Category
Article
ISSN
1387-1811

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✦ Synopsis

Sodalite was successfully synthesized by solid-state transformation of NaA in the presence of excess NaCl. The transformation conditions, effect of cation exchange, and treatment agents were investigated. The transformation mechanism is proposed as zeolite A ? carnegieite ? sodalite. When the temperature is above a threshold value, the transformation is abruptly accelerated. K-and Cs-exchanged zeolite A are transformed more rapidly than NaA. Sodalite could not be formed when the NaA was treated with KCl.

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