Micellar Effects on Hydrolysis of Parathion

Shrivastava, Ashish; Ghosh, Kallol K.

doi:10.1080/01932690802313063

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…In addition to the nonionic surfactants, alkyltrimethylammonium bromides with an alkyl chain length from 10 to 16 have been investigated as cationic surfactants to evaluate the impact of the hydrophobicity of the surfactant on the reaction performance. The cationic surfactants have been applied as they frequently show the potential to increase the reaction rate of hydrolysis reactions. − …”

Section: Results and Discussionmentioning

confidence: 99%

Alkaline Hydrolysis of Methyl Decanoate in Surfactant-Based Systems

et al. 2018

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Surfactant-modified reaction systems are one approach to perform organic reactions with water as the solvent involving hydrophobic reactants. Herein, the alkaline hydrolysis of the long-chain methyl decanoate in cationic and nonionic surfactant-modified systems is reported. The physicochemical behavior of the reaction mixture and the performance of the alkaline hydrolysis were systematically investigated. In water as the solvent, the reaction is slow, but at elevated temperatures, the alkaline hydrolysis of methyl decanoate is accelerated because the reaction product sodium decanoate acts as an ionic surfactant, leading to an increased solubility of methyl decanoate in the aqueous phase. The rate can be significantly increased by the addition of surfactants as solubilizers. In nonionic TX-100 solutions, the reaction rate can be increased by a factor of about 100 for a surfactant concentration of 5 wt %. If cationic surfactants are applied, the reaction rate can be further increased due to the electrostatic interaction between the hydroxide ions in solution and the charged head groups of the cationic micelles.

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Section: Results and Discussionmentioning

confidence: 99%

Alkaline Hydrolysis of Methyl Decanoate in Surfactant-Based Systems

et al. 2018

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“…When the selected surfactant concentration is too high, the reactants are diluted by a larger number of available micelles. This indicates that the local concentration is mainly important for rate enhancement in micellar media [ 95 , 96 ]. To apply the concept of catalysis to micellar solutions, a catalyst has to be added to the system, and it has to be evaluated whether the catalytic reaction benefits from the micellar reaction medium.…”

Section: Discussionmentioning

confidence: 99%

Is Micellar Catalysis Green Chemistry?

et al. 2023

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Many years ago, twelve principles were defined for carrying out chemical reactions and processes from a green chemistry perspective. It is everyone’s endeavor to take these points into account as far as possible when developing new processes or improving existing ones. Especially in the field of organic synthesis, a new area of research has thus been established: micellar catalysis. This review article addresses the question of whether micellar catalysis is green chemistry by applying the twelve principles to micellar reaction media. The review shows that many reactions can be transferred from an organic solvent to a micellar medium, but that the surfactant also has a crucial role as a solubilizer. Thus, the reactions can be carried out in a much more environmentally friendly manner and with less risk. Moreover, surfactants are being reformulated in their design, synthesis, and degradation to add extra advantages to micellar catalysis to match all the twelve principles of green chemistry.

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