2011
DOI: 10.1002/kin.20597
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Kinetic studies on saponification of ethyl acetate using an innovative conductivity‐monitoring instrument with a pulsating sensor

Abstract: An innovative conductometric measurement technique using a nonconventional but high-performance (high-precision, high-resolution, rapid response features for online graphic display) in house-built pulsating conductivity monitoring instrument has been deployed to study the kinetic behavior during the reaction of ethyl acetate and NaOH. A laboratorymade constant temperature reaction bath with the facility of continuous stirring of solution for homogeneous mixing was used to carry out experiments at desired solut… Show more

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Cited by 28 publications
(34 citation statements)
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“…Saponification occurs when fats and oils, classified as extractives, react with sodium hydroxide to form glycerol and fatty acid salts. Saponification reactions are accelerated at higher temperatures [26], indicating that excess sodium hydroxide may be needed for the degradation of hemicellulose to SDF. Results shown in Table 2 support this theory as higher sodium hydroxide concentrations up to 2.0% produced higher recoveries of SDF.…”
Section: Effects Of Reaction Temperaturementioning
confidence: 99%
“…Saponification occurs when fats and oils, classified as extractives, react with sodium hydroxide to form glycerol and fatty acid salts. Saponification reactions are accelerated at higher temperatures [26], indicating that excess sodium hydroxide may be needed for the degradation of hemicellulose to SDF. Results shown in Table 2 support this theory as higher sodium hydroxide concentrations up to 2.0% produced higher recoveries of SDF.…”
Section: Effects Of Reaction Temperaturementioning
confidence: 99%
“…The aim of this section is to explain quantitatively the reduction in fatty acid alkyl esters in homogeneously alkalicatalysed biodiesel production at various reaction times and catalyst concentrations. The saponification rate of FAME in an alcoholic hydroxide solution was analysed based on bimolecular collisions of the metal hydroxide and FAME, with FAME as the limiting reactant [3,8,9].…”
Section: Kinetics Of Fatty Acid Methyl Esters (Fame) Saponification Imentioning
confidence: 99%
“…For instance, the Arrhenius activation energies of 41.40-63.18 kJ mol À1 [3,5,6,11] for alkyl esters saponification in aqueous/protic medium were too small to account for the desolvation energy of 423.4 kJ mol À1 [9] required for the desolvation of OH À in the aqueous medium. The values of the activation energies for alky esters saponification suggest that the direct collision of desolvated OH À ions is implausible.…”
Section: Introductionmentioning
confidence: 96%
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