ϵ-Caprolactam: new by-product free synthesis routes

The production of the nylon precursor ϵ-caprolactam via the Beckmann rearrangement is one of the large industrial processes worldwide. In this work, the state-of-the-art processes are summarized and the two main pathways for new production capacities (the butadiene-based and especially the heterogen...

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Bibliographic Details
Published in:Catalysis reviews. Science and engineering 2001-11, Vol.43 (4), p.381-441
Main Authors: Dahlhoff, Gerd, Niederer, John P. M., Hoelderich, Wolfgang F.
Format: Article
Language:English
Subjects:
Butadiene-based routes
Catalysis
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
Heterogeneously catalyzed routes
Nylon recycling
State-of-the-art routes
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
ϵ-Caprolactam
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Summary:The production of the nylon precursor ϵ-caprolactam via the Beckmann rearrangement is one of the large industrial processes worldwide. In this work, the state-of-the-art processes are summarized and the two main pathways for new production capacities (the butadiene-based and especially the heterogeneously catalyzed routes starting from benzene/cyclohexanone oxime) are described. Additionally, the new recycling processes to recover caprolactam from waste carpets and some new approaches are described.
ISSN:0161-4940
1520-5703
DOI:10.1081/CR-120001808