The synthesis of silicalite-2 (MEL structure) is reported in order to understand the effect, on chemico-physical properties, of some parameter modifications during the synthesis, such as silica source. MEL type zeolites with intergrowth with MFI-type structure were prepared and the percentage of the two phases has been changed. The effect of synthesis parameters on crystals shape and size was investigated. Silicalite-2 catalysts were tested in the vapour phase Beckmann rearrangement of cyclohexanone oxime. In some cases interesting results leading to long catalyst lifetime (over 80 hours) and interesting caprolactam selectivity (>90%) are obtained.

High-silica MEL structures: synthesis parameters modification and catalytic results on Beckmann rearrangement reaction

FORNI, LAURA;FORNASARI, GIUSEPPE;TRIFIRO', FERRUCCIO;
2005

Abstract

The synthesis of silicalite-2 (MEL structure) is reported in order to understand the effect, on chemico-physical properties, of some parameter modifications during the synthesis, such as silica source. MEL type zeolites with intergrowth with MFI-type structure were prepared and the percentage of the two phases has been changed. The effect of synthesis parameters on crystals shape and size was investigated. Silicalite-2 catalysts were tested in the vapour phase Beckmann rearrangement of cyclohexanone oxime. In some cases interesting results leading to long catalyst lifetime (over 80 hours) and interesting caprolactam selectivity (>90%) are obtained.
2005
Molecular Sieves: From Basic Research to Industrial Applications. Proceedings of the 3rd International Zeolite Symposium (3rd FEZA)
1787
1794
L. Forni; G. Fornasari; M. Guerrini; F. Trifirò; A. Macario; A. Katovic; C. Giordano; J. B.Nagy
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/23190
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