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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(08) [August 2011] >
| Title: | Organized media as redox catalysts on the reaction rate of CoIII-FeII redox couple |
| Authors: | Mukherjee, Mousumi
Mahapatra, Ambikesh |
| Keywords: | Solution chemistry
Kinetics
Electron transfer
Surfactants
Micelles
Reverse micelles
Organized media
Cobalt-Iron redox reaction |
| Issue Date: | Aug-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Micelles catalyze the [Co(NH3)5Cl](NO3)2 -
Mohr’s salt redox reaction due to the binding of the substrates onto the
micellar surface by non-coulombic and coulombic interactions. This binding
increases the encounter probability, leading to a substantially accelerated
reaction. The kinetic studies of the same redox reaction have also been carried
out in the water pools of non-ionic reverse micelles of Triton X-100/1-butanol
in n-heptane. The findings indicate that probably substrate solubilization
sites in micelles and reverse micelles are the interfacial and Stern regions.
The reaction rates decrease with the water-to-surfactant mole ratio. The
correct selection of surfactant for micelle, size of reverse micellar water
pool cavity, different additives and the catalyst connecting nanoparticles
control the electron transfer reaction rate in solution. Copper-sol induced
catalysis occurs due to the availability of a suitable surface which acts as a
mediator for the electron-transfer reaction between [Co(NH3)5Cl](NO3)2 and
Mohr’s salt. |
| Page(s): | 1043-1049 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(08) [August 2011]
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