Oxidation of manganese(II) by ozone and reduction of manganese(III) by hydrogen peroxide in acidic solution

Abstract

the reaction involving formation of the manganese(II)-superoxide complex and reaction of H 2 O 2 with Mn(IV) species formed due to reversible disproportionation of Mn(III), is suggested.

The role of transition metal ions on HO<sub>x</sub> radicals in clouds: a numerical evaluation of its impact on multiphase chemistry

“…Sheng (1993) made this hypothesis that the reaction between Mn 2+ and ozone produced Mn(III) and free OH radical based upon a theoretical study. Jacobsen et al (1998a) (Ruggaber et al, 1997) and we use available laboratory data (cross sections and quantum yields). Photodissociation coefficients at noon are shown in Table 6.…”

Oxidative Amidation of Aromatic Ethers Catalyzed by Rhodium Acetate

“…This may be because the reaction kinetics against ozone of these metals is different in each case, with Fe(II) and Mn(II) metals presenting the highest oxidation kinetics (Fig 3). The reaction mechanism plays a decisive role in the oxidation rate of metal species; thus, in the case of Fe(II) and Mn(II), it has been proposed that the oxidation process with ozone occurs by the formation of ions of great reactivity, such as FeO 2 + and MnO 2 + , respectively 21–26. The generation of these ions would explain the rapid oxidation of these metals.…”

Mechanistic studies on versatile metal-assisted hydrogen peroxide activation processes for biomedical and environmental incentives

“…In acidic solutions, Mn(II) can be oxidized to Mn(III), which in turn can be reduced back by hydrogen peroxide. The proposed mechanism involves an Mn(IV) intermediate that appears as a product of Mn(III) disproportionation [183]. Najafpour attempted a hypothesis that during the development of oxygen photosynthesis, a gradual increase in the complexity of plant and bacterial apparatus could be preceded by the functioning of some SOD-like complex [184].…”