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ε‐Caprolactamium Hydrogen Sulfate: An Ionic Liquid Used for Decades in the Large‐Scale Production of ε‐Caprolactam
Author(s) -
Fábos Viktória,
Lantos Diána,
Bodor Andrea,
Bálint AnaMaria,
Mika László T.,
Sielcken Ot E.,
Cuiper Agnes,
Horváth István T.
Publication year - 2008
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200700135
Subject(s) - caprolactam , oleum , beckmann rearrangement , ionic liquid , cyclohexanone oxime , cyclohexanone , hydrogen sulfate , chemistry , sulfuric acid , sulfate , inorganic chemistry , organic chemistry , chemical engineering , catalysis , engineering
An iconic liquid : Investigation of the mechanism of the Beckmann rearrangement of cyclohexanone oxime to ε‐caprolactam ( 1 ) in sulfuric acid or oleum has led to the conclusion that the manufacturing process for ε‐caprolactam is in fact the largest‐scale industrial technology that has been using an ionic liquid, caprolactamium hydrogen sulfate ( 2 ), as the reaction medium for decades.