A Study of Sensitized Explosions. VI. Experimental Observations on the Hydrogen-Oxygen Reaction Sensitized by Nitrosyl Chloride

Details A Study of Sensitized Explosions. VI. Experimental Observations on the Hydrogen-Oxygen Reaction Sensitized by Nitrosyl Chloride A Study of Sensitized Explosions. VI. Experimental Observations on the Hydrogen-Oxygen Reaction Sensitized by Nitrosyl Chloride

Mar 1941

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1941rspsa.177..411d&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 177, Issue 971, pp. 411-420

Physics

Scientific paper

Small amounts of nitrosyl chloride lower the ignition temperature of 2H2 + O2 mixtures by over 200 degrees C, the efficiency of this substance in this respect being slightly greater than nitrogen peroxide. At a given temperature the ignition is confined between a lower and an upper concentration of catalyst, outside which only slow reaction occurs. Both the slow reaction and the ignition are preceded by an induction period, the length of which passes from large values through a minimum to further large values as the catalyst concentration is increased, and which, in contrast to the H2-O2-NO2 system, is unaffected by irradiation with light from a mercury-vapour lamp. The induction periods and limits depend on the pressure and temperature of reactants in a very similar way to the induction periods and limits of the H2-O2-NO2 system described in Part V. The similarity of the two systems extends to the effect of non-reactant gases in quenching the ignition, the quenching pressures being of the same magnitude in both systems. A difference is, however, found in that these foreign gases shorten the induction period in this system whereas they lengthen it in the H2-O2-NO2 system.

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