Kinetics of decomposition of hydrogen peroxide on Fe(III)−Al(III) hydroxide-oxide systems

Mani, B.; Mohan, Ch. Ravi; Rao, V. Sitakara

doi:10.1007/bf02068578

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…In addition, H202 is known to be formed naturally on fresh aluminum surfaces in the presence of water (47), a situation that would occur when the surface is exposed by acid etching. It does not appear, however, that H202 is likely to play any direct role in the atmospheric corrosion of aluminum, since it has very little activity towards the metal (48).…”

Section: Cmentioning

confidence: 99%

Corrosion Mechanisms for Aluminum Exposed to the Atmosphere

Graedel

1989

J. Electrochem. Soc.

173

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Upon exposure to the indoor or outdoor atmosphere and during some manufacturing processes, aluminum degrades with the formation of a variety of corrosion products. This paper relates those products to the atmospheric constituents that are their precursors, explores the chemical processes involved in corrosion product formation, and evaluates the magnitudes of the sources for the major corrosive anions. A three-layer structure is identified: the aluminum itself and its native oxide, the corrosion layer atop the oxidized aluminum, and a surface contamination layer. At low to moderate humidities, this last layer can be pictured as a moist agglomeration of deposited particles and common ionic compounds. At high

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Section: Cmentioning

confidence: 99%

Corrosion Mechanisms for Aluminum Exposed to the Atmosphere

Graedel

1989

J. Electrochem. Soc.

173

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“…Investigations have focused on the effects of supported metal catalysts [9,10], metal oxides [3,81, and systems in which metal ions are initially in solution [1,2]. For supported catalysts and metal oxides, most studies have concluded that the decomposition reaction is first order with respect to peroxide concentration [3,9,10]. For systems involving solutions of metal ions kinetic phenomena are more complex, and appear dependent on the transition metals and reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Iron‐catalyzed decomposition of hydrogen peroxide in alkaline solution

Abbot

Brown

1990

Int J of Chemical Kinetics

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The decomposition of alkaline hydrogen peroxide solutions at 20°C has been studied in the presence of both supported iron catalysts and in systems with iron initially in solution. Studies with an iron-alumina supported catalyst showed the decomposition reaction was first order with respect to total peroxide concentration, while studies with alkaline Fe3' produced more complex behavior. This has been attributed to the presence of at least two distinct catalytically active iron species. The first species is highly active and gives rise to high initial rates of reaction. A decrease in concentration of this species is observed together with an increase in concentration of a second, less active, iron species. The catalytic behavior of this "aged iron species was found to be very similar to that of the supported iron catalyst.

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“…The slow kinetics of H 2 O 2 is related to the fact that the dissolution of Al species from the framework is a slow phenomenon [19]. Furthermore, the Al Stability of hydrogen peroxide during perhydrolysis 397 species released are in oxide or hydroxide form, and according to Mani et al [26], their catalytic activity towards hydrogen peroxide decomposition is minor.…”

Section: Resultsmentioning

confidence: 98%

Stability of hydrogen peroxide during perhydrolysis of carboxylic acids on acidic heterogeneous catalysts

et al. 2010

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This paper describes a study of the stability of hydrogen peroxide in the presence of different aluminosilicate materials, in connection with an investigation of carboxylic acid perhydrolysis. During the reaction, aluminosilicate materials such as H-b zeolites, mesoporous material H-MCM-41 and alumina initiate the decomposition of hydrogen peroxide. The reason of the spontaneous decomposition of H 2 O 2 is related to the partial dealumination of these zeolites. However, in the case of experiments carried out with H-ZSM-5 zeolite catalysts, a slight catalytic effect on the perhydrolysis and no spontaneous decomposition of hydrogen peroxide were noticed. The use of cation exchange resins as catalysts is more kinetically beneficial than H-ZSM-5 zeolite catalysts.

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Kinetics of decomposition of hydrogen peroxide on Fe(III)−Al(III) hydroxide-oxide systems

Cited by 11 publications

References 3 publications

Corrosion Mechanisms for Aluminum Exposed to the Atmosphere

Corrosion Mechanisms for Aluminum Exposed to the Atmosphere

Kinetics of Iron‐catalyzed decomposition of hydrogen peroxide in alkaline solution

Stability of hydrogen peroxide during perhydrolysis of carboxylic acids on acidic heterogeneous catalysts

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