Kinetics of the MnO4−Oxidation of Anionic Surfactant (Sodiumdodecyl Sulphate): Evidence for the Formation of Soluble Colloidal MnO2

In this paper, we followed the kinetics of methyl methacrylate (MMA) through a novel fluorescence method. The real-time measurement results show that in the regime of very low monomer contents, such as a solution containing 0.1 wt% of MMA with respect to water and with the anionic surfactant of sodium dodecyl sulphate (SDS), the kinetic of the miniemulsion could be followed by this embed fluorescence method. The processes of changing from emulsion to miniemulsion with different amount of surfactant and cosurfactant also have been monitored.

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Kinetics of metribuzin degradation by colloidal manganese dioxide in absence and presence of surfactants

Chemical Papers ◽

10.2478/s11696-013-0424-7 ◽

2014 ◽

Vol 68 (1) ◽

Cited By ~ 17

Author(s):

Qamruzzaman ◽

Abu Nasar

Keyword(s):

Sodium Dodecyl ◽

Oxidative Degradation ◽

Activation Parameters ◽

Water Soluble ◽

Ionic Surfactant ◽

Ammonium Bromide ◽

Pseudo First Order Reaction ◽

First Order ◽

Colloidal Mno2 ◽

Kinetics Of

AbstractThe kinetics of the degradation of metribuzin by water-soluble colloidal MnO2 in acidic medium (HClO4) were studied spectrophotometrically in the absence and presence of surfactants. The experiments were performed under pseudo-first-order reaction conditions in respect of MnO2. The degradation was observed to be of the first order in respect of MnO2 while of fractional order for both metribuzin and HClO4. The rate constant for the degradation of metribuzin was observed to decrease as the concentration of MnO2 increased. The anionic surfactant, sodium dodecyl sulphate (SDS), was observed to be ineffective whereas the non-ionic surfactant, Triton X-100 (TX-100), accelerated the reaction rate. However, the cationic surfactant, cetyltrimethyl ammonium bromide (CTAB), caused flocculation with oppositely-charged colloidal MnO2; hence further study was not possible. The catalytic effect of TX-100 was discussed in the light of the available mathematical model. The kinetic data were exploited to generate the various activation parameters for the oxidative degradation of metribuzin by colloidal MnO2 in the absence as well as the presence of the non-ionic surfactant, TX-100.

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Kinetics of oxidation of vanillic acid by colloidal MnO2: correlation of micellar catalysis to the micellar properties of surfactants and mixed surfactants

Reaction Kinetics Mechanisms and Catalysis ◽

10.1007/s11144-021-02030-8 ◽

2021 ◽

Author(s):

Mohammed Hassan ◽

Adnan Dahadha ◽

Mohammad Al-Dhoun ◽

Yazan Batineh ◽

Tamara R. Mfarej

Keyword(s):

Vanillic Acid ◽

Micellar Catalysis ◽

Mixed Surfactants ◽

Kinetics Of Oxidation ◽

Micellar Properties ◽

Colloidal Mno2 ◽

Kinetics Of

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Kinetic study of oxidation of paracetamol by water-soluble colloidal MnO2 in the presence of an anionic surfactant

Colloid & Polymer Science ◽

10.1007/s00396-016-3921-8 ◽

2016 ◽

Vol 294 (10) ◽

pp. 1611-1622 ◽

Cited By ~ 11

Author(s):

Ajaya Kumar Singh ◽

Neelam Sen ◽

Som Kumar Chatterjee ◽

Md. Abu Bin Hasan Susan

Keyword(s):

Kinetic Study ◽

Anionic Surfactant ◽

Water Soluble ◽

Colloidal Mno2

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Mortars prepared with mechanochemical treated asbestos-containing waste

MATEC Web of Conferences ◽

10.1051/matecconf/201825101009 ◽

2018 ◽

Vol 251 ◽

pp. 01009 ◽

Cited By ~ 1

Author(s):

Alexander Mezhov ◽

Ekaterina Shokodko ◽

Maria Kaddo

Keyword(s):

Compressive Strength ◽

Anionic Surfactant ◽

Ball Mill ◽

Experimental Results ◽

Mechanochemical Treatment ◽

Hydraulic Activity ◽

Kinetics Of

The paper presents the results of recycling of asbestos-containing waste (ACW). It is shown that hydraulic activity of ACW is increased using mechanochemical treatment in the vibratory ball mill in presence of anionic surfactant. Experimental results show that substitution of 10% w.t. of cement on activated asbestos-containing waste leads to increasing of the compressive strength to 20%. Finally, the effect of the activated ACW on the hardening kinetics of mortars is examined.

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Kinetics of Reduction of Colloidal MnO2 by Glyphosate in Aqueous and Micellar Media

International Journal of Inorganic Chemistry ◽

10.1155/2011/243519 ◽

2011 ◽

Vol 2011 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Uzma Aisha ◽

Qamruzzaman ◽

M. Z. A. Rafiquee

Keyword(s):

Cetyltrimethylammonium Bromide ◽

Binding Constants ◽

Reaction Rates ◽

Lauryl Sulfate ◽

Micellar Media ◽

First Order Kinetics ◽

Rate Of Reaction ◽

Colloidal Mno2 ◽

Kinetics Of ◽

Kinetics Of Reduction

The kinetics of the reduction of colloidal MnO2 by glyphosate has been investigated spectrophotometrically in an aqueous and micellar (cetyltrimethylammonium bromide, sodium lauryl sulfate) media. The reaction follows first-order kinetics with respect to colloidal MnO2 in both the aqueous and micellar media. The rate of oxidation increases with increase in [glyphosate] in the lower concentration range but becomes independent at its higher concentrations. The addition of both the anionic (NaLS) and cationic (CTAB) micelles increased the rate of reduction of colloidal MnO2 by glyphosate while the nonionic TX-100 micelles did not influence the rate of reaction. In both aqueous and micellar media, the oxidation of glyphosate occurs through its adsorption over colloidal MnO2 surface. The reaction in micellar media was treated by considering the pseudophase model. The values of reaction rates and binding constants in the presence of micelles were determined.

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