Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification

Andreas Toth, Matthäus Siebenhofer, Susanne Lux*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Emulsion-enhanced biphasic esterification has proven to be applicable for carboxylic acid recovery from dilute aqueous process streams. The carboxylic acid is esterified with 1-octanol in an emulsified regime with 4-dodecylbenzenesulfonic acid (4-DBSA) or Ni(DBSA)2 as catalyst. After phase separation, the laden solvent phase must be regenerated. This study presents a regeneration concept based on reactive distillation with transesterification of the octyl ester-laden solvent with methanol. The regenerated solvent is reused in the extraction step.

Original languageEnglish
Pages (from-to)1493-1501
Number of pages9
Issue number10
Publication statusPublished - Oct 2021


  • Carboxylic acid
  • Metallosurfactants
  • Reactive distillation
  • Solvent regeneration
  • Transesterification

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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