The Cerium(IV)-Induced Decomposition of Peroxymonosulfate: Acid Dependence and Peroxydisulfate Formation

1990 ◽  
Vol 43 (2) ◽  
pp. 321 ◽  
Author(s):  
C Marsh ◽  
Z Zhang ◽  
JO Edwards
Keyword(s):  
Free Radical ◽  
Redox System ◽  
Chain Mechanism ◽  
Radical Chain ◽  
Rate Law ◽  
Radical Chain Mechanism ◽  
Induced Decomposition ◽  
Acid Dependence

An improved rate law for the CeIV-induced decomposition of HOOSO3- in aqueous H2SO4 has been established by study of the rate as a function of acidity. In aqueous HClO4 the rate is much faster but a rate law could not be obtained. Peroxydisulfate, by a variant of the AsIII and FeII analysis of the redox system, has been shown to be formed in the amount of half of the CeIV lost. A free-radical chain mechanism is postulated.

Metal ion initiated halogenation reaction of N-haloamines

1970 ◽  
Vol 48 (4) ◽  
pp. 544-545 ◽  
Author(s):  
F. Minisci ◽  
G. P. Gardini ◽  
F. Bertini
Keyword(s):  
Free Radical ◽  
Radical Cation ◽  
Chlorine Atom ◽  
Metal Ion ◽  
Chain Mechanism ◽  
Radical Chain ◽  
Radical Chain Mechanism ◽  
Halogenation Reaction ◽  
Amino Radical Cation ◽  
Methyl Heptanoate

The metal ion catalyzed chlorination of 1-chlorobutane, 1-chlorohexane, methyl-pentanoate, and methyl-heptanoate by protonated N-chloroamines proceeds by a free radical chain mechanism and the chain carrying species was shown not to be a chlorine atom, but an amino radical cation.

Catalysis of hydrogen peroxide dceomposition by 2-electron oxidation and reduction

1959 ◽  
Vol 12 (2) ◽  
pp. 147 ◽  
Author(s):  
NK King ◽  
ME Winfield
Keyword(s):  
Hydrogen Peroxide ◽  
Free Radical ◽  
Radical Formation ◽  
Single Electron ◽  
Chain Mechanism ◽  
Radical Chain ◽  
Radical Chain Mechanism ◽  
Free Radical Formation ◽  
Decomposition Of H2o2

A thermodynamical argument is used to support the suggestion made elsewhere that the more common radical chain mechanism for catalysed decomposition of H2O2 need not predominate if the catalyst can readily undergo a reversible 2-electron oxidation. How complete the exclusion of free radical formation may be depends upon the redox characteristics of the catalyst and on whether its oxidation by two single-electron steps is readily reversible along the same path.

Insight into the free-radical chain mechanism of gold-catalyzed hydrocarbon oxidation reactions in the liquid phase

2007 ◽  
Vol 122 (3-4) ◽  
pp. 284-291 ◽  
Author(s):  
Pascal Lignier ◽  
Franck Morfin ◽  
Laurent Piccolo ◽  
Jean-Luc Rousset ◽  
Valérie Caps
Keyword(s):  
Free Radical ◽  
Liquid Phase ◽  
Hydrocarbon Oxidation ◽  
Chain Mechanism ◽  
Oxidation Reactions ◽  
Radical Chain ◽  
Radical Chain Mechanism ◽  
Insight Into
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