Abstract
This chapter describes the use of MCM-22 as catalyst for the Beckmann rearrangement of cyclohexanone oxime to ɛ-caprolactam. It also presents the analysis of its applicability for the Beckmann rearrangement of cyclohexanone oxime to ɛ-caprolactam. A variety of catalysts has been applied to the Beckmann rearrangement of cyclohexanone oxime to ɛ-caprolactam. Experiments with MFI structures yield good results showing the importance of weak acidic sites, a large outer surface, and pore structure accessible only through 10MR channels. The MCM-22 catalyst with its large outer surface and special structure is recommended for the use in the Beckmann rearrangement. The performance of the material is compared to one of the established catalysts—the [B]-MFI––showing several drawbacks, suchs as lower yields.
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