Kinetics on the hydrolysis of fatty acid esters in subcritical water

Pramote Khuwijitjaru, Tomoyuki Fujii, Shuji Adachi, Yukitaka Kimura, Ryuichi Matsuno

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Hydrolysis of fatty acid esters with different acyl and alkyl chains in subcritical water was examined over a temperature range of 483-543 K in a batch reactor. The concentrations of fatty acid esters were sufficiently low to assume a homogeneous reaction at every temperature. The hydrolysis of every fatty acid ester at any temperature obeyed first-order kinetics. The rate constant was observed at various temperatures, and the apparent activation energy and frequency factor were evaluated according to the Arrhenius equation for each fatty acid ester. Steric hindrance of the acyl and alkyl chains was found to increase the activation energy of the hydrolysis. The enthalpy-entropy compensation held in the hydrolysis of the fatty acid esters tested.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalChemical Engineering Journal
Volume99
Issue number1
DOIs
Publication statusPublished - May 17 2004
Externally publishedYes

Fingerprint

Fatty acids
ester
hydrolysis
Hydrolysis
Esters
Fatty Acids
fatty acid
kinetics
Kinetics
Water
activation energy
water
Activation energy
temperature
Temperature
Batch reactors
enthalpy
entropy
Enthalpy
Rate constants

Keywords

  • Esters
  • Fatty acids
  • Hydrolysis
  • Kinetics
  • Subcritical water

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Environmental Engineering

Cite this

Kinetics on the hydrolysis of fatty acid esters in subcritical water. / Khuwijitjaru, Pramote; Fujii, Tomoyuki; Adachi, Shuji; Kimura, Yukitaka; Matsuno, Ryuichi.

In: Chemical Engineering Journal, Vol. 99, No. 1, 17.05.2004, p. 1-4.

Research output: Contribution to journalArticle

Khuwijitjaru, Pramote ; Fujii, Tomoyuki ; Adachi, Shuji ; Kimura, Yukitaka ; Matsuno, Ryuichi. / Kinetics on the hydrolysis of fatty acid esters in subcritical water. In: Chemical Engineering Journal. 2004 ; Vol. 99, No. 1. pp. 1-4.
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