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Influences of ethylenediamine treatment of Silicalite-1 on the catalytic vapor-phase Beckmann rearrangement of cyclohexanone oxime

Paper ID Volume ID Publish Year Pages File Format Full-Text
52787 46887 2007 5 PDF Available
Title
Influences of ethylenediamine treatment of Silicalite-1 on the catalytic vapor-phase Beckmann rearrangement of cyclohexanone oxime
Abstract

Silicalite-1 was modified by organic base of ethylenediamine. The characterization results indicated that after alkaline treatment, the crystal structure of S-1 was not destructed or changed; the silanol nests were maintained, but the terminal silanol groups were eliminated. The modified S-1 exhibited better performance in the vapor-phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam, especially in terms of the stability. It is inferred that the silanol nests are the most suitable centers for the Beckmann rearrangement reaction, while the terminal and vicinal silanol groups might be responsible for the coke deposition.

Keywords
Cyclohexanone oxime; Beckmann rearrangement; Silicalite-1; Base treatment; Ethylenediamine
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Influences of ethylenediamine treatment of Silicalite-1 on the catalytic vapor-phase Beckmann rearrangement of cyclohexanone oxime
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 1, January 2007, Pages 16–20
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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