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Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification
Author(s) -
Toth Andreas,
Siebenhofer Matthäus,
Lux Susanne
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202100074
Subject(s) - carboxylic acid , solvent , distillation , chemistry , reactive distillation , emulsion , transesterification , methanol , organic chemistry , aqueous two phase system , catalysis , aqueous solution , extraction (chemistry) , chromatography
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.