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Ghosh SK, Saha R, Ghosh A, Mukherjee K, Saha B. Micellar Catalysis on 1,10-Phenanthroline Promoted Chromic Acid Oxidation of Glycerol in Aqueous Media. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.110204] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
On pseudo-first order conditions, the monomeric species of Cr(VI) was found to be kinetically active in the absence of phenanthroline (phen) whereas in the phen-promoted path, the Cr(VI)-phen complex undergoes a nucleophilic attack by glycerol to form a ternary complex which subsequently experience a redox decomposition leading to glyceraldehydes and Cr(III)-phen complex. The effect of the cationic surfactant, cetyl pyridinium chloride (CPC); anionic surfactant, sodium dodecyl sulphate (SDS) and nonionic surfactant, triton X-100 (TX-100) on the unpromoted and phen-promoted path have been studied. Micellar effects have been explained by considering the preferential partitioning of reactants between the micellar and aqueous phase.
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Ghosh SK, Ghosh A, Saha R, Mukherjee K, Basu A, Saha B. Micellar Catalysis on Pentavalent Vanadium Ion Oxidation of Ethanol in Aqueous Acid Media. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.110194] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Vanadium(V) oxidation of ethanol follows a first order dependency on the concentration of ethanol, vanadium(V), H+ and HSO4
–. These observations remain unaltered in the presence of externally added surfactants. The effect of the cationic surfactant (i.e., N-cetylpyridinium chloride [CPC]), anionic surfactant (i.e., sodium dodecyl sulphate [SDS]) and neutral surfactant (i.e., Triton X-100 [TX-100]) has been studied. CPC inhibits the reactions, whereas SDS and TX-100 accelerate the reaction to different extents. Observed effects have been justified by considering the hydrophobic and electrostatic interaction between the surfactants and reactants. SDS and TX-100 can be used as catalysts in the production of acetaldehyde from ethanol.
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Smith GN, Eastoe J. Controlling colloid charge in nonpolar liquids with surfactants. Phys Chem Chem Phys 2013. [DOI: 10.1039/c2cp42625k] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ghosh SK, Basu A, Saha R, Ghosh A, Mukherjee K, Saha B. Micellar catalysis on picolinic acid promoted hexavalent chromium oxidation of glycerol. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.669035] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Sumanta K. Ghosh
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
| | - Ankita Basu
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
| | - Rumpa Saha
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
| | - Aniruddha Ghosh
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
| | - Kakali Mukherjee
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
| | - Bidyut Saha
- a Department of Chemistry , The University of Burdwan , Burdwan – 713104 , West Bengal , India
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