Soot combustion manganese catalysts prepared by thermal decomposition ...
KMnO 4 decomposition at 400 °C yields birnessite and potassium manganate, and the latter can be removed by water washing. ... From a practical point of view, the preferred soot combustion mechanism is based on the catalytic oxidation of NO to NO 2, NO 2 being a highly oxidising gas. In order to explore the potential of each manganese sample to oxidise …
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Some Aspects of the Burning Process of Antimony and Potassium …
Based on the results of the thermal analysis presented in the literature, the combustion products should be expected to contain compounds derived from the thermal …
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Some Aspects of the Burning Process of Antimony and Potassium Manganate ...
Antimony and potassium manganate (VII) compositions are widely used in time delay elements of detonators. Despite the existing literature on such systems, there is no complete information on...
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Soot combustion manganese catalysts prepared by thermal decomposition ...
Manganese oxides with cryptomelane and/or birnessite structure have been successfully prepared by thermal decomposition of potassium permanganate. The samples have been characterized by XRD, FTIR, TGA, N 2 adsortion at −196 °C, H 2-TPR and XPS, and have been evaluated as catalysts for soot combustion in a NO x /O 2 gas mixture.
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13.4.16: Oxidation of Alkenes with Potassium Manganate
That means that the reaction will not stop at this point unless the potassium manganate(VII) solution is very dilute, very cold, and preferably not under acidic conditions. If you are using hot concentrated acidified potassium manganate(VII) solution, what you finally end up with depends on the arrangement of groups around the carbon-carbon double bond. The formula below …
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Alumina-Supported Manganese Catalysts for Soot …
The thermal decomposition of alumina-supported KMnO4 yields a mixture of supported birnessite and potassium manganate which is the most effective, among those prepared, to lower the soot combustion temperature. …
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Influence of the loading pressure on the dependance of burn rate …
... combustion of the Sb/KMnO 4 composition with 30% Sb could not be initiated for a loading pressure greater than 400 MPa. Figure 5 shows that in the tested range of the Sb content in the...
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Influence of the loading pressure on the dependance …
... combustion of the Sb/KMnO 4 composition with 30% Sb could not be initiated for a loading pressure greater than 400 MPa. Figure 5 shows that in the tested range of the Sb content in the...
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Soot combustion manganese catalysts prepared by thermal …
Manganese oxides with cryptomelane and/or birnessite structure have been successfully prepared by thermal decomposition of potassium permanganate. The samples have been characterized by XRD, FTIR, TGA, N 2 adsortion at −196 °C, H 2-TPR and XPS, and …
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Some Aspects of the Burning Process of Antimony and Potassium Manganate ...
Antimony and potassium manganate(VII) compositions are widely used in time delay elements of detonators. Despite the existing literature on such systems, there is no complete information on the burning process of Sb/KMnO4 compositions in closed systems. There are also no data on the heat of their combustion in conditions of increased pressure …
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Production of potassium manganate and barium manganate from …
This work describes a route for extracting manganese and zinc from spent zinc–manganese dioxide dry cells via fusion of the electroactive components with potassium hydroxide to form potassium manganate (K 2 MnO 4) and soluble zincates. The fused mass was dissolved in aqueous KOH and the insoluble matter was separated. Under the ...
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some more reactions of benzene and methylbenzene
Alkyl groups are usually fairly resistant to oxidation. However, when they are attached to a benzene ring, they are easily oxidised by an alkaline solution of potassium manganate(VII) (potassium permanganate). Methylbenzene is heated under reflux with a solution of potassium manganate(VII) made alkaline with sodium carbonate. The purple colour ...
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Alumina-Supported Manganese Catalysts for Soot Combustion
The thermal decomposition of alumina-supported KMnO4 yields a mixture of supported birnessite and potassium manganate which is the most effective, among those prepared, to lower the …
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Some Aspects of the Burning Process of Antimony and …
Antimony and potassium manganate (VII) compositions are widely used in time delay elements of detonators. Despite the existing literature on such systems, there is no complete information on...
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(PDF) Burning Process of Antimony and Potassium Manganate …
Based on the results of the thermal analysis presented in the literature, the combustion products should be expected to contain compounds derived from the thermal decomposition of potassium manganate (VII) and the products of antimony oxidation by the released oxygen.
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Alumina-Supported Manganese Catalysts for Soot Combustion …
The thermal decomposition of alumina-supported KMnO4 yields a mixture of supported birnessite and potassium manganate which is the most effective, among those prepared, to lower the soot combustion temperature. However, this material is not useful for soot combustion because the accelerating effect is not based on a catalytic process ...
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APPLIED CHEMISTRY
Potassium permanganate is produced by the electro-oxidation of alkaline potassium manganate in a divided electrolytic cell. A filter press type flow electrolyzer has been designed, fabricated, …
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Some Aspects of the Burning Process of Antimony and Potassium Manganate ...
Based on the results of the thermal analysis presented in the literature, the combustion products should be expected to contain compounds derived from the thermal decomposition of potassium manganate (VII) and the products of antimony oxidation by the released oxygen.
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(PDF) Burning Process of Antimony and Potassium Manganate …
Based on the results of the thermal analysis presented in the literature, the combustion products should be expected to contain compounds derived from the thermal decomposition of …
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Alumina-Supported Manganese Catalysts for Soot Combustion
The thermal decomposition of alumina-supported KMnO4 yields a mixture of supported birnessite and potassium manganate which is the most effective, among those prepared, to lower the soot combustion temperature.
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Mechanism of thermal decomposition of potassium …
It was found that the thermoelectromotive force of potassium permanganate has a negative sign, which points to the electronic nature of per- manganate conductivity. From the experi- mental data obtained by employing the generally accepted methods of studying semiconductors [7], it was determined that the activation energy Ey =- 1 -62 0-03 and ==0-62 -03, the ratio of the …
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