Calculation of flammability limits of silane–oxygen and silane–air mixtures

The upper and lower flammability limits of silane-oxygen and silane–air mixtures at pressures of 0.05–1.1 atm and temperatures of 350–640 K are found on the basis of Westbrook's detailed chemical kinetics. It is demonstrated that the death of OH radicals has a minor effect on these limits (their stability) within the framework of the Arrhenius kinetic model. The effect of the silane–air mixture composition on the flammability limits is found. It is shown that the behavior of the ultimate temperature of ignition is nonmonotonic as the fraction of silane increases.