CTAB Reverse Micelles as Catalysts for the Oxidation of Ascorbic Acid by K3[Fe(CN)6]
The oxidation of ascorbic acid by K3[Fe(CN)6] was studied in reverse micellar systems composed of CTAB (Cetyltrimethylammonium bromide), and it was found the observed first order (k1(aq) = 5.2×10−5 s−1, k1(rev) = 61.4×10−4 s−1) rate constant in reverse micellar medium is around forty times higher...
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| Main Authors: | , , , |
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| Format: | EJournal Article |
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Department of Chemical Engineering - Diponegoro University,
2022-03-30.
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| LEADER | 02283 am a22002773u 4500 | ||
|---|---|---|---|
| 001 | BCREC_UNDIP_12732_6809 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Bhargavi, K. |e author |
| 700 | 1 | 0 | |a Shyamala, P. |e author |
| 700 | 1 | 0 | |a Chakravarthi, P S S |e author |
| 700 | 1 | 0 | |a Nagalakshmi, K V |e author |
| 245 | 0 | 0 | |a CTAB Reverse Micelles as Catalysts for the Oxidation of Ascorbic Acid by K3[Fe(CN)6] |
| 260 | |b Department of Chemical Engineering - Diponegoro University, |c 2022-03-30. | ||
| 500 | |a https://ejournal2.undip.ac.id/index.php/bcrec/article/view/12732 | ||
| 520 | |a The oxidation of ascorbic acid by K3[Fe(CN)6] was studied in reverse micellar systems composed of CTAB (Cetyltrimethylammonium bromide), and it was found the observed first order (k1(aq) = 5.2×10−5 s−1, k1(rev) = 61.4×10−4 s−1) rate constant in reverse micellar medium is around forty times higher compared to aqueous medium under identical conditions. The rate enhancement (k2(aq) = 0.9×10−5 mole−1.dm3.sec−1, k2(rev) = 1.75×10−3 mole−1.dm3.sec−1) is attributed to the large concentration effect and lower dielectric constant in the reverse micelles. The rate of the reaction increases with increase in W = {[H2O]/[surfactant]} which is explained in terms of ionic strength of the water pool. The effect of surfactant concentration on rate was explained on the basis of Berezin pseudo phase model. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). | ||
| 540 | |a Copyright (c) 2021 by Authors, Published by BCREC Group | ||
| 540 | |a https://creativecommons.org/licenses/by-sa/4.0 | ||
| 546 | |a eng | ||
| 690 | |a Ascorbic acid; [K3Fe(CN)6]; CTAB (Cetyltrimethylammonium bromide); dielectric constant; reverse micelles. | ||
| 655 | 7 | |a info:eu-repo/semantics/article |2 local | |
| 655 | 7 | |a info:eu-repo/semantics/publishedVersion |2 local | |
| 655 | 7 | |2 local | |
| 786 | 0 | |n Bulletin of Chemical Reaction Engineering & Catalysis; 2022: BCREC Volume 17 Issue 1 Year 2022 (March 2022); 157-162 | |
| 786 | 0 | |n 1978-2993 | |
| 787 | 0 | |n https://ejournal2.undip.ac.id/index.php/bcrec/article/view/12732/6809 | |
| 856 | 4 | 1 | |u https://ejournal2.undip.ac.id/index.php/bcrec/article/view/12732/6809 |z Get Fulltext |