Vapor phase Beckmann rearrangement of cyclohexanone oxime on Hβ-zeolites treated by ammonia
作者： Yongjie Zhang , Yaquan Wang , Yifeng Bu
DOI: 10.1016/J.MICROMESO.2007.03.015
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摘要: Abstract Hβ was synthesized by a hydrothermal method followed ion exchange and treated with aqueous solutions of ammonia. The obtained catalysts were characterized BET surface area measurement, XRD, XPS, TEM, IR, pyridine-TPD studied in the vapor phase Beckmann rearrangement cyclohexanone oxime. results show that comparison pure Hβ, ammonia treatments led to higher area, lower SiO 2 /Al O 3 ratio, more total acid sites, weak especially Bronsted slow deactivation reaction. indicate for having structure β-zeolite, suitable sites might be sites.
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