Isotopic Exchange between Oxygen and Carbon Monoxide in Shock Waves

1969 ◽  
Vol 51 (1) ◽  
pp. 84-91 ◽  
Author(s):  
S. H. Garnett ◽  
G. B. Kistiakowsky ◽  
B. V. O'Grady
Keyword(s):  
Carbon Monoxide ◽  
Shock Waves ◽  
Isotopic Exchange

scholarly journals Explosion waves and shock waves III-The initiation of detonation in mixtures of ethylene and oxygen and of carbon monoxide and oxygen

1935 ◽  
Vol 152 (876) ◽  
pp. 418-445 ◽  
Author(s):  
William Payman ◽  
H. Titman ◽  
Jocelyn Field Thorpe
Keyword(s):  
Shock Wave ◽  
Carbon Monoxide ◽  
Shock Waves ◽  
Detonation Wave ◽  
Wave Speed ◽  
Gas Mixtures ◽  
Gas Mixture ◽  
And Shock Waves ◽  
Long Run ◽  
Detonating Gas

This series of papers has so far dealt mainly with non-maintained or partially maintained atmospheric shock waves, and only incidentally with the fully maintained "detonation" wave. It is generally accepted that the detonation wave in an explosive gas mixture is a shock wave produced by the rapid combustion of the mixture, sufficiently intense to cause almost instantaneous ignition of the gas through which it passes, and continuous maintained by the combustion thereby started. An account of some preliminary experiments, using the "wave-speed" camera to record the movement of the flame and of the invisible shock waves in front of the flame in gas mixtures prior to detonation, has already been given by one of us. Those experiments related mainly to hydrogen-oxygen and methane-oxygen mixtures whose aptitude to detonate may be regarded as moderate, for the continuation of the work, mixtures with oxygen have again been used, but a more readily detonating gas, ethylene, was chosen. Experiments were also made with carbon monoxide, because the flame usually requires a comparatively long run before detonation is established. These two gases have the advantage, not shared by hydrogen and methane, that their predetonation flames are sufficiently actinic for good records to be obtained by direct photography for comparison with corresponding "wave-speed" records. All gas mixtures used were saturated with water vapour.

Oxidation of Carbon Monoxide/Methane Mixtures in Shock Waves

1971 ◽  
Vol 54 (4) ◽  
pp. 1718-1725 ◽  
Author(s):  
A. M. Dean ◽  
G. B. Kistiakowsky
Keyword(s):  
Carbon Monoxide ◽  
Shock Waves ◽  
Oxidation Of Carbon Monoxide

Spectra produced by shock waves, flames and detonations

1957 ◽  
Vol 239 (1219) ◽  
pp. 464-475 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Carbon Tetrachloride ◽  
Shock Waves ◽  
Strong Shock ◽  
Emission Spectra ◽  
Propagation Mechanism ◽  
Carbon Formation ◽  
Promising Technique ◽  
Discharge Tubes ◽  
Strong Shock Waves

Emission spectra excited in various gases, including fuel and fuel+argon mixtures, by strong shock waves from a bursting diaphragm are compared with those given by flames and by spark-ignited and shock-ignited detonations. Shocks through hydrocarbon or hydrocarbon+argon mixtures, without oxygen, give carbon formation and C 2 emission but not CH. Formaldehyde, ether, alcohols, ethyl nitrate, carbon tetrachloride and chloroform have also been studied. Carbon monoxide+argon mixtures give strong C 2 but no CO bands; hydrogen or oxygen only slightly quench this C2, but mixed hydrogen and oxygen quench it strongly. Reactions involving C 2 and CH are discussed. In detonations, OH is very strong, and C 2 and CH are weak compared with burner flames. Time records, using a photomultiplier and oscillograph, indicate that C 2 emission comes from the reaction zone of the detonation, but OH and the continuous spectrum are emitted mainly by the hot gases behind the front. The relation of the results to the propagation mechanism is briefly discussed. Shock-excited spectra resemble those produced by flames rather than those from discharge tubes, and this appears to be a promising technique for studying fundamental processes in flames.

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