Summary
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1.
The concentration limits were determined for flame propagation in hydrogen-air mixtures having additions of methane, propane, butane, isobutane, and benzene, in H2 + Cl2 and H2 + NO mixtures in presence of propane, and in mixtures, diluted with hydrogen and nitrogen, of methane, propane, butane, and benzene with air.
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It was concluded that the addition of sinall amounts of hydrocarbons to hydrogen-air mixtures results in lowering of the upper limit for flame propagation owing to chemical reaction between the inhibitor and active centers in the oxidation of hydrogen. As the amount of the addition is increased, the chain reaction of hydrogen with oxygen is suppressed to such an extent that combustion of the added hydrocarbon begins to play a determining role (hydrogen then plays the part of inert diluent).
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Blyumberg, E.A., Vasilyev, V.I. & Emanuel, N.M. Effect of additions of hydrocarbons on the concentration limits for flame propagation in gas mixtures containing hydrogen. Russ Chem Bull 6, 1198–1205 (1957). https://doi.org/10.1007/BF01167387
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DOI: https://doi.org/10.1007/BF01167387