Manganese hydrogen peroxide with

The procedure is experimentally simple, and the workup involves only the destruction of the traces of hydrogen peroxide with manganese dioxide and evaporation of the hexamethyldisiloxane. Pyridine additives serve to buffer the highly acidic rhenium species and to shut down the detrimental acid-catalyzed epoxideopening pathways. The scope of this transformation is best appreciated through the examples presented in Table 12.2 [28],... 

Hal perin, J. and Taube, H. "The Transfer of Oxygen Atoms in Oxidation-Reduction Reactions. IV. The Reaction of Hydrogen Peroxide with Sulfite, Thiosulfate and of Oxygen, Manganese Dioxide and Permanganate with Sulfite," J. Am. Chem. 1975, 380-382. 

Production of acid from both ethylene glycol and glycerol treated with copper (II) sulfate or chloride follows the (very similar) maximum and minimum trends reported for the ferric system. Hydrogen peroxide, with 0.002 to 0.01 M manganese (II), cobalt (II), nickel (II), and, especially, copper (II)... 

There are several different types of catalase. Most animal cells have a form that has four haem molecules embedded in its core. In contrast, some microbes have a different sort of catalase, which contains manganese instead of haem at its core. Despite their different structures, both enzymes are equally fast, and are correctly called catalase, in the sense that they work in the same way — they both catalyse the reaction of two molecules of hydrogen peroxide with each other to form oxygen and water ... 

In the test for hydrogen peroxide with potassium dichromate in acid solution the colored substance formed is more soluble in ether than in water. Hence in making the test, if the solution is shaken with a little ether, the colored compound is extracted by it and concentrated into smaller volume, where it is more easily detected. The rate of decomposition of hydrogen peroxide with the evolution of oxygen gas is greatly increased by the presence of any fine powder, like manganese dioxide, which acts as a catalytic agent. 

Meier B, Sehn AP, Michel C and Saran M (1994a) Reactions of hydrogen peroxide with superoxide dismutase from Propionibacterium shermanii - an enzyme which is equally active with iron or manganese - are independent of the prosthetic metal. Arch Biochem Biophys 313 296-303. 

Artifact Effects. Best (18) has postulated the following reactions of hydrogen peroxide with manganese dioxide in neutral or alkaline suspensions ... 

Kinetic catalytic methods make use of a number of inorganic oxidation indicator reactions, the most representative of which is probably the decomposition of hydrogen peroxide with different reagents catalyzed by copper, iron, manganese, etc., which allows these species to be determined by UV-visible spectrophotometry. 

The many papers on redox initiation include studies of very varied systems, e.g., persulphate with thiomalic acid, hydrogen peroxide with thiourea, and manganese(n) with ascorbic acid. Kinetic and mechanistic complications... 

Figure 9.11 a A solution of hydrogen peroxide at room temperature, b The solution of hydrogen peroxide with a little manganese(lV) oxide added. 

Schachl K, Alemu H, Kalcher K, Jezkova J, Svancara I, Vytfas K (1997) Amperometiic determination of hydrogen peroxide with a manganese dioxide-modified carbon paste electrode using flow injection analysis. Analyst 122(9) 985-989... 

Divalent copper, cobalt, nickel, and vanadyl ions promote chemiluminescence from the luminol—hydrogen peroxide reaction, which can be used to determine these metals to concentrations of 1—10 ppb (272,273). The light intensity is generally linear with metal concentration of 10 to 10 M range (272). Manganese(II) can also be determined when an amine is added to increase its reduction potential by stabili2ing Mn (ITT) (272). Since all of these ions are active, ion exchange must be used for deterrnination of a particular metal in mixtures (274). 

Chemical Properties. Potassium cyanide is readily oxidized to potassium cyanate [590-28-3] by heating in the presence of oxygen or easily reduced oxides, such as those of lead or tin or manganese dioxide, and in aqueous solution by reaction with hypochlorites or hydrogen peroxide. 

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