Keywords
additional branching
heated wire
hydrogen
ignition
methane
oxygen
temperature
Abstract
It was found that the ignition temperatures of H2–O2 and H2–CH4–O2 mixtures at a low pressure on heated Pd, Pt, Nichrome and Kanthal wires at 40Torr increase with a decrease in H2 concentration; only a heated Pd wire shows the pronounced catalytic action. Numerical calculations allowed us to reveal the role of an additional branching step, viz. H+HO2→2OH.
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