Abstract
Explosion studies in multiatmosphere H2-F2-O2 mixtures show that the pressures at which such mixtures spontaneously explode are greatly affected by treatment of the explosion cell surfaces prior to filling the cell with H2-F2-O2 mixtures. This strong effect of surface conditioning indicates that the observed explosions in H2-F2-O2 mixtures (covering a wide range in [F2]/[H2] ratios) with total pressures up to 10 atm result from surface-associated initiation processes rather than from purely volume-initiated third-limit processes. These results agree with a kinetic model involving H2O2 production with a chain formation of H2O at the surface.
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