The thermal decomposition of potassium permanganate

Prout, E. G.; Tompkins, F. C.

doi:10.1039/tf9444000488

Cited by 451 publications

(154 citation statements)

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“…8). As expected, the activation energy for this process (40.7 kJ/mol) is substantially less than for the decomposition of unactivated KMn04, which is known to have an activation energy of approximately 150 kJ/mol ( 12).…”

Section: Discussionsupporting

confidence: 73%

“…The total catalytic contribution to the rate of reaction can therefore be visualized as resulting from an activation of permanganate by adsorption on the surface of colloidal Mn02 particles. These "activated" MnOb ions can then be reduced by reaction with alkene or by the thermal explusion of oxygen (12). In fact, at low alkene concentrations, thermal decomposition of the activated permanganate appears to be the primary autocatalytic mechanism (see Fig.…”

Section: Discussionmentioning

confidence: 99%

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Oxidation of hydrocarbons. 14.Autocatalysis during the oxidation of 1-tetradecene by methyltributylammonium permanganate

Lee¹,

Perez‐Benito²

1985

Can. J. Chem.

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Autocatalysis has been detected during the reaction of methyltributylammonium permanganate with 1-tetradecene in methylene chloride solutions. Activation of permanganate by adsorption on colloidal particles of the product, manganese dioxide, appears to be responsible for the observed autocatalysis. Permanganate so activated can then be reduced either by reaction with the alkene or by thermal decomposition.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Oxidation of hydrocarbons. 14.Autocatalysis during the oxidation of 1-tetradecene by methyltributylammonium permanganate

Lee¹,

Perez‐Benito²

1985

Can. J. Chem.

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“…Since E a varies strongly with extent of conversion indicates that the process is kinetically complex, i.e. multi-step mechanism [17,18]. Eective activation energy is found to be higher for the II stage than the III stage.…”

Section: Methodsmentioning

confidence: 94%

Kinetics and Mechanical Studies of Melaminium bis(trichloroacetate) dihydrate

et al. 2014

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The thermal decomposition kinetics of melaminium bis(trichloroacetate) dihydrate (MTCA) has been studied by thermogravimetry and derivative thermogravimetry techniques using non-isothermal experiments at three different heating rates 10, 15, and 20Non-isothermal studies of MTCA revealed that the decomposition occurs in three stages involving dehydration and decomposition. The apparent activation energy (Ea) and the pre-exponential factor (ln A) of each stage of thermal decomposition at various linear heating rates are calculated using FlynnWall, Friedman, Kissinger, and KimPark method. A signicant variation of eective activation energy (Ea) with conversion (α) indicates that the process is kinetically complex. The linear relationship between the A and Ea values is well established (compensation eect). Isothermal kinetics of thermal decomposition of MTCA was found to obey AvramiErofeev's (A4) and power law (P3) equations. In addition to the above, mechanical properties have been estimated by Vicker's microhardness test for the grown crystal.

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“…The catalysts of these reactions are the regions of aluminum phase. So we describe these stages by Prout-Tompkins equation of heterogeneous autocatalytic reaction [38,39]:…”

Section: Non-linear Regression Kinetic Modelingmentioning

confidence: 99%

Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

Kulikova

Быков

Belozerova

et al. 2013

Journal of Non-Crystalline Solids

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We study structure and crystallization kinetics of melt-spun Al 86 Ni 8 Gd 6 amorphous alloy. The X-ray diffraction and transmission electron microscopy detect pronounced nanoscale clusters in the structure of the amorphous state. Differential scanning calorimetry analysis shows complex three-stage crystallization of the amorphous alloy at different heating rates. The high temperature X-ray diffraction analysis reveals crystallization mechanism with competing reactions of intermetallic compounds formation. Summarizing the experimental data, we introduce multiversion non-linear kinetic model that describes the crystallization process completely and allows us to determine kinetic parameters with high accuracy. The activation energies obtained reveal relatively stable amorphous state.

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The thermal decomposition of potassium permanganate

Cited by 451 publications

References 0 publications

Oxidation of hydrocarbons. 14.Autocatalysis during the oxidation of 1-tetradecene by methyltributylammonium permanganate

Oxidation of hydrocarbons. 14.Autocatalysis during the oxidation of 1-tetradecene by methyltributylammonium permanganate

Kinetics and Mechanical Studies of Melaminium bis(trichloroacetate) dihydrate

Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

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