The role of hydroperoxides as chain-branching agents in the cool-flame oxidation of n-heptane

1967 ◽  
pp. 769 ◽  
Author(s):  
A. R. Burgess ◽  
R. G. W. Laughlin
Keyword(s):  
Chain Branching ◽  
Cool Flame ◽  
Flame Oxidation

A mathematical model of the cool-flame oxidation of acetaldehyde

1971 ◽  
Vol 322 (1550) ◽  
pp. 377-403 ◽  
Keyword(s):  
Mathematical Model ◽  
Negative Temperature ◽  
Isothermal Oxidation ◽  
Limited Range ◽  
Detailed Model ◽  
Cool Flame ◽  
Induction Periods ◽  
Cool Flames ◽  
Satisfactory Account ◽  
Flame Oxidation

A detailed mathematical model of the non-isothermal oxidation of acetaldehyde has been found to give a realistic simulation of (i) single and multiple cool flames, their limits, amplitudes and induction periods; (ii) two-stage ignition; and (iii) the negative temperature coefficient for the maximum rate of slow combustion. A simplified form of the model, valid over a limited range of conditions, has been subjected to mathematical analysis to provide interpretations of the effects simulated by the detailed model. It is concluded that cool flames are thermokinetic effects often, but not exclusively, of an oscillatory nature, and that a satisfactory account of cool-flame phenomena must necessarily take reactant consumption into account.

Sensitization of pentane-oxygen mixtures to DDT via cool flame oxidation

2003 ◽  
Vol 132 (3) ◽  
pp. 387-394 ◽  
Author(s):  
M.P. Romano ◽  
M.I. Radulescu ◽  
A.J. Higgins ◽  
J.H.S. Lee
Keyword(s):  
Cool Flame ◽  
Flame Oxidation

The role of cool-flame chemistry in quasi-steady combustion and extinction ofn-heptane droplets

2014 ◽  
Vol 18 (4-5) ◽  
pp. 515-531 ◽  
Author(s):  
Guenter Paczko ◽  
Norbert Peters ◽  
Kalyanasundaram Seshadri ◽  
Forman Arthur Williams
Keyword(s):  
Cool Flame ◽  
Steady Combustion ◽  
Flame Chemistry

Cool-flame oxidation of ketones

1969 ◽  
Vol 12 (1) ◽  
pp. 365-373 ◽  
Author(s):  
J.A. Barnard ◽  
A. Watts
Keyword(s):  
Cool Flame ◽  
Flame Oxidation

Polyketide synthase chimeras reveal key role of ketosynthase domain in chain branching

2015 ◽  
Vol 11 (12) ◽  
pp. 949-951 ◽  
Author(s):  
Srividhya Sundaram ◽  
Daniel Heine ◽  
Christian Hertweck
Keyword(s):  
Polyketide Synthase ◽  
Chain Branching ◽  
Ketosynthase Domain

The cool-flame oxidation of 3-methylpentane

1972 ◽  
Vol 329 (1579) ◽  
pp. 433-452 ◽  
Keyword(s):  
Hydrogen Transfer ◽  
Detailed Comparison ◽  
Combustion Products ◽  
Experimental Conditions ◽  
Cool Flame ◽  
Slow Combustion ◽  
Flame Region ◽  
The Difference ◽  
Increasing Temperature ◽  
Flame Oxidation

Kinetic and analytical studies of the gaseous oxidation of 3-methylpentane have been carried out both under slow combustion conditions and more especially in the cool-flame region. Analysis of the complex mixtures of in termediate products provides strong evidence for the occurrence of 3-methylpentylperoxy radical isomerization, which leads initially to the formation mainly of the corresponding β- and γ-hydroperoxyalkyl radicals. Detailed comparison of the yields of partial combustion products with those obtained from 3-ethylpentane under similar experimental conditions shows that formation of γ-hydro-peroxyalkyl radicals takes place less readily during the oxidation of 3-methylpentane due to the restricted number of modes of 1:6 hydrogen transfer. In consequence, this branched C 6 alkane gives smaller yields of the corresponding O -heterocycles but larger amounts of β-scission products. During the isomerization of 3-methylpentylperoxy radicals there is evidence for the occurrence of some alkyl group shifts. The results show that there is a somewhat greater tendency for m ethyl groups to migrate than there is for ethyl groups, the difference becoming more marked with increasing temperature.

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