Mechanism for diacyl peroxide decomposition

1982 ◽  
Vol 47 (12) ◽  
pp. 2242-2251 ◽  
Author(s):  
R. J. Linhardt ◽  
B. L. Murr ◽  
E. Montgomery ◽  
J. Osby ◽  
J. Sherbine
Keyword(s):  
Diacyl Peroxide ◽  
Peroxide Decomposition

ChemInform Abstract: MECHANISM FOR DIACYL PEROXIDE DECOMPOSITION

1982 ◽  
Vol 13 (48) ◽  
Author(s):  
R. J. LINHARDT ◽  
B. L. MURR ◽  
E. MONTGOMERY ◽  
J. OSBY ◽  
J. SHERBINE
Keyword(s):  
Diacyl Peroxide ◽  
Peroxide Decomposition

Magnetic polarization of nuclei in diacyl peroxide decomposition reactions

1972 ◽  
Vol 13 (1) ◽  
pp. 29-34
Author(s):  
A. V. Kessenikh ◽  
G. M. Zhidomirov ◽  
A. L. Buchachenko ◽  
S. V. Rykov
Keyword(s):  
Magnetic Polarization ◽  
Decomposition Reactions ◽  
Diacyl Peroxide ◽  
Peroxide Decomposition

NMR analysis of diacyl peroxide decomposition in methanol in response to temperature and microwave radiation

2012 ◽  
Vol 79 (2) ◽  
pp. 302-306 ◽  
Author(s):  
O. A. Haidukevich ◽  
E. D. Skakovskii ◽  
L. Yu. Tychinskaya ◽  
T. D. Zvereva ◽  
E. A. Dikusar ◽  
...  
Keyword(s):  
Microwave Radiation ◽  
Nmr Analysis ◽  
Diacyl Peroxide ◽  
Peroxide Decomposition ◽  
Response To Temperature

The role of copper ions in hydrogen peroxide bleaching: Their origin, removal, and effect on pulp quality

TAPPI Journal ◽  
2012 ◽  
Vol 11 (7) ◽  
pp. 37-46 ◽  
Author(s):  
PEDRO E.G. LOUREIRO ◽  
SANDRINE DUARTE ◽  
DMITRY V. EVTUGUIN ◽  
M. GRAÇA V.S. CARVALHO
Keyword(s):  
Hydrogen Peroxide ◽  
Copper Ions ◽  
Peroxide Bleaching ◽  
Metals Removal ◽  
Peroxide Decomposition ◽  
Equipment Corrosion ◽  
And Performance ◽  
And Control ◽  
Main Effects

This study puts particular emphasis on the role of copper ions in the performance of hydrogen peroxide bleaching (P-stage). Owing to their variable levels across the bleaching line due to washing filtrates, bleaching reagents, and equipment corrosion, these ions can play a major role in hydrogen peroxide decomposition and be detrimental to polysaccharide integrity. In this study, a Cu-contaminated D0(EOP)D1 prebleached pulp was subjected to an acidic washing (A-stage) or chelation (Q-stage) before the alkaline P-stage. The objective was to understand the isolated and combined role of copper ions in peroxide bleaching performance. By applying an experimental design, it was possible to identify the main effects of the pretreatment variables on the extent of metals removal and performance of the P-stage. The acid treatment was unsuccessful in terms of complete copper removal, magnesium preservation, and control of hydrogen peroxide consumption in the following P-stage. Increasing reaction temperature and time of the acidic A-stage improved the brightness stability of the D0(EOP)D1AP bleached pulp. The optimum conditions for chelation pretreatment to maximize the brightness gains obtained in the subsequent P-stage with the lowest peroxide consumption were 0.4% diethylenetriaminepentaacetic acid (DTPA), 80ºC, and 4.5 pH.

O-O bond activation with cobalt(II)-ethylenediamine complexes in ion-exchange resins

1980 ◽  
Vol 45 (6) ◽  
pp. 1780-1784 ◽  
Author(s):  
Atanas Andreev ◽  
Lachezar Prahov ◽  
Dimitar Shopov
Keyword(s):  
Ion Exchange ◽  
Bond Activation ◽  
Catalytic Properties ◽  
Decomposition Reaction ◽  
Ion Exchange Resins ◽  
Hydrogen Peroxide Decomposition ◽  
Surface Complexes ◽  
Peroxide Decomposition ◽  
Epr Parameters ◽  
Exchange Resins

The formation of Oxygen paramagnetic adducts of Co(II) containing ion-exchange resins in the presence of adsorbed ethylenediamine has been found. The EPR parameters of a complex of the type Co(III) (en)2O-2 and of O-2 species formed in the presence of Co(en)2+3 have been described. The catalytic properties of Co-ethylenediamine surface complexes with respect to the hydrogen peroxide decomposition reaction have been investigated and a probable mechanism has been suggested.

Hydrogen peroxide decomposition on a two-component CuO-Cr2O3 catalyst

1988 ◽  
Vol 53 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Viliam Múčka ◽  
Kamil Lang
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Extreme Values ◽  
Catalytic Properties ◽  
Active Components ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Peroxide Decomposition ◽  
Two Component ◽  
Catalytically Active

Some physical and catalytic properties of the two-component copper(II)oxide-chromium(III)oxide catalyst with different content of both components were studied using the decomposition of the aqueous solution of hydrogen peroxide as a testing reaction. It has been found that along to both basic components, the system under study contains also the spinel structure CuCr2O4, chromate washable by water and hexavalent ions of chromium unwashable by water. The soluble chromate is catalytically active. During the first period of the reaction the equilibrium is being established in both homogeneous and heterogeneous catalytic systems. The catalytic activity as well as the specific surface area of the washed solid is a non-monotonous function of its composition. It seems highly probable that the extreme values of both these quantities are not connected with the detected admixtures in the catalytic system. The system under study is very insensitive with regard to the applied doses of gamma radiation. Its catalytic properties are changed rather significantly after the thermal treatment and particularly after the partial reduction to low degree by hydrogen. The observed changes of the catalytic activity of the system under study are very probably in connection with the changes of the valence state of the catalytically active components of the catalyst.

scholarly journals Density Functional Theory Calculations on Copper-Mediated Peroxide Decomposition Reactions: Implications for Jet Fuel Autoxidation

2020 ◽  
Vol 34 (6) ◽  
pp. 7439-7447 ◽  
Author(s):  
Christopher M. Parks ◽  
Ehsan Alborzi ◽  
Simon G. Blakey ◽  
Anthony J. H. M. Meijer ◽  
Mohamed Pourkashanian
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Jet Fuel ◽  
Functional Theory ◽  
Decomposition Reactions ◽  
Peroxide Decomposition
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