| Title: | Saponification reaction system : a detailed mass transfer coefficient determination |
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| Authors: | ID Pečar, Darja (Author)
ID Goršek, Andreja (Author) |
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| Files: |  Acta_Chimica_Slovenica_2015_Pecar,_Gorsek_Saponification_reaction_system_a_detailed_mass_transfer_coefficient_determination.pdf (156,61 KB)
MD5: D13402DC9713FD175439D70DA6D55E6D
 https://journals.matheo.si/index.php/ACSi/article/view/1110
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | The saponification of an aromatic ester with an aqueous sodium hydroxide was studied within a heterogeneous reaction medium in order to determine the overall kinetics of the selected system. The extended thermo-kinetic model was developed compared to the previously used simple one. The reaction rate within a heterogeneous liquid-liquid system incorporates a chemical kinetics term as well as mass transfer between both phases. Chemical rate constant was obtained from experiments within a homogeneous medium, whilst the mass-transfer coefficient was determined separately. The measured thermal profiles were then the bases for determining the overall reaction-rate.
This study presents the development of an extended kinetic model for considering mass transfer regarding the saponification of ethyl benzoate with sodium hydroxide within a heterogeneous reaction medium. The time-dependences are presented for the mass transfer coefficient and the interfacial areas at different heterogeneous stages and temperatures.
The results indicated an important role of reliable kinetic model, as significant difference in $k_La$ product was obtained with extended and simple approach. |
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| Keywords: | chemical kinetics, mass transfer, saponification, heterogeneous system |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2015 |
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| Number of pages: | str. 237-241 |
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| Numbering: | Letn. 62, št. 1 |
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| PID: | 20.500.12556/DKUM-61138  |
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| ISSN: | 1318-0207 |
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| UDC: | 66.094.941.094.7 |
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| ISSN on article: | 1318-0207 |
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| COBISS.SI-ID: | 18583830 |
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| DOI: | 10.17344/acsi.2014.1110 |
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| NUK URN: | URN:SI:UM:DK:LOFHCV1C |
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| Publication date in DKUM: | 25.08.2017 |
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| Views: | 1991 |
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| Downloads: | 240 |
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| Metadata: |    |
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| Categories: | Misc.
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