Dehydration oxime on the self-architected MFI structure

Na-ZSM-5 (Si/Al=50, 100 and 150) zeolites have been synthesized in alkaline pH of 10.5 +/- 0.2 by hydrothermal process without the use of template and with tetraethyl orthosilicate as silicon source. The MFI phase formation is confirmed under various synthesis conditions. The synthesized material possesses strong acid sites and the Na-ZSM-5 catalyst ion exchanged to H-ZSM-5 has been can be used to investigate the dehydration of 4-Cl-benzaldoxime. The dehydration of benzaldoxime is confirmed by the observing nitiile stretch at 2400 cm(-1). The conversion levels (similar to 51%) show that the synthesized catalyst possesses strong Bronsted acid sites.