The aim of this paper is to investigate the role played by the zeolitic defect groups on the catalytic behavior of Silicalite-1 in Beckmann rearrangement reaction. Samples of Silicalite-1 catalysts were prepared and activated by different post-synthesis procedures. Catalytic activity and deactivation rate of the different catalysts were correlated with the different types of hydroxyl population. FT-IR and NMR techniques were used in order to determine the amount of defect groups and the different silanol types. The results show that Silicalite-1 is a good catalyst for Beckmann rearrangement reaction and when the geminal silanols are present the catalyst deactivate faster. © 2006 Elsevier Inc. All rights reserved.
|Titolo:||Beckmann rearrangement reaction: About the role of defect groups in high silica zeolite catalysts|
|Data di pubblicazione:||2007|
|Appare nelle tipologie:||1.1 Articolo in rivista|