The continuous synthesis of ε-caprolactam from 6-aminocapronitrile in high-temperature water

Autor:	Ian Pearson, Chong Yan, A. Stuart Coote, Eduardo García-Verdugo, Martyn Poliakoff, Joan Fraga-Dubreuil, Paul A. Hamley
Rok vydání:	2008
Předmět:	Single process Caprolactam Residence time (fluid dynamics) Pollution Supercritical fluid Catalysis Solvent Hydrolysis chemistry.chemical_compound chemistry Chemical engineering Yield (chemistry) Environmental Chemistry Organic chemistry
Zdroj:	Green Chem.. 10:98-103
ISSN:	1463-9270 1463-9262
DOI:	10.1039/b710041h
Popis:	Caprolactam (CPL) is a widely used chemical intermediate for the production of Nylon-6. However, existing synthetic routes in industry have severe drawbacks. The development on the synthesis of CPL from 6-aminocapronitrile (ACN), using near- and supercritical water as the solvent, reactant and catalyst, is described in this paper. The two-step reaction (hydrolysis and cyclization) to produce CPL is combined in a single process, by using a continuous-flow system. Effects of pressure, temperature, residence time and the concentration of ACN were studied. The high-temperature high-pressure environment possesses unique properties which result in very efficient catalysis. The overall CPL yield reaches 90% within a short residence time (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::df4f964cc73f77c0598c4675e81b4ff5 https://doi.org/10.1039/b710041h Zobrazit plný text záznamu