✦ LIBER ✦

Kinetics of nucleation and crystallization of silicalite

✍ Scribed by C.L. Huang; W.C. Yu; T.Y. Lee

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 548 KB
Volume: 41
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(86)87139-1

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✦ Synopsis

Silicalite was synthesized under hydrothermal conditions at temperatures ranging from 353o-453oK. The nucleation and crystallization curves vs. time were obtained. Subsequently, reaction paths and kinetic models of nucleation and crystallization of the silicalite were postulated. Results of experiment and the kinetic models were in fairly good agreement. 'Furthermore, the activation energies of nucleation and crystallization were determined to be 8.5 and 11.6 Kcal/mole respectively. The silicalites were examined by XRD, IR, TGA and chemical analysis for its identification, bonding nature, template contents and their decomposition in the zeolitic framework.

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