Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification

Andreas Toth; Matthäus Siebenhofer; Susanne Lux

doi:10.1002/cite.202100074

Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification

Andreas Toth, Matthäus Siebenhofer, Susanne Lux^*

^*Corresponding author for this work

Institute of Chemical Engineering and Environmental Technology (6670)

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	1493-1501
Number of pages	9
Journal	Chemie-Ingenieur-Technik
Volume	93
Issue number	10
DOIs	https://doi.org/10.1002/cite.202100074
Publication status	Published - Oct 2021

Keywords

Carboxylic acid
Metallosurfactants
Reactive distillation
Solvent regeneration
Transesterification

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1002/cite.202100074

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title = "Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification",

abstract = "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.",

keywords = "Carboxylic acid, Metallosurfactants, Reactive distillation, Solvent regeneration, Transesterification",

author = "Andreas Toth and Matth{\"a}us Siebenhofer and Susanne Lux",

note = "Funding Information: The authors gratefully acknowledge the support from the NAWI Graz program. Thanks are also due to Tanja Weiss for her support with laboratory work. Publisher Copyright: {\textcopyright} 2021 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH",

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doi = "10.1002/cite.202100074",

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volume = "93",

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T1 - Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification

AU - Toth, Andreas

AU - Siebenhofer, Matthäus

AU - Lux, Susanne

N1 - Funding Information: The authors gratefully acknowledge the support from the NAWI Graz program. Thanks are also due to Tanja Weiss for her support with laboratory work. Publisher Copyright: © 2021 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH

PY - 2021/10

Y1 - 2021/10

N2 - 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.

AB - 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.

KW - Carboxylic acid

KW - Metallosurfactants

KW - Reactive distillation

KW - Solvent regeneration

KW - Transesterification

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DO - 10.1002/cite.202100074

M3 - Article

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JO - Chemie-Ingenieur-Technik

JF - Chemie-Ingenieur-Technik

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Reactive Distillation for Solvent Regeneration after Biphasic Carboxylic Acid Esterification

Abstract

Keywords

ASJC Scopus subject areas

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