Stoichiometry and possible mechanism of SiH/sub 4/-O/sub 2/ explosions

Journal Article · Wed Apr 01 00:00:00 EST 1987 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(87)90064-2· OSTI ID:6605274

Hartman, J R; Famil-Ghiriha, J; Ring, M A; O'Neal, H E

The products of silane-O/sub 2/ mixture explosions vary with mixture composition. For O/sub 2/-rich mixtures (>70% O/sub 2/), the products are H/sub 2/O and SiO/sub 2/. As the mixtures become richer in silane, H/sub 2/ replaces H/sub 2/O as a final product. For very SiH/sub 4/-rich mixtures (>70% SiH/sub 4/), the products are H/sub 2/, SiO/sub x/, and Si. The fact that silane is totally consumed in silane-rich mixtures (70-90% silane) demonstrates that solid particle formation (SiO/sub 2/, SiO, and Si) occurs very rapidly and that the accompanying heat release is essential to drive the reactions to completion. It is also clear that the explosion of a silane-rich mixture is primarily a thermal explosion of silane. Effects due to problems associated with upper pressure limit measurements and mechanistic aspects of the SiH/sub 4/-O/sub 2/ explosion reaction are discussed.

• Research Organization: Dept. of Chemistry, San Diego State Univ., San Diego, CA 92182
• OSTI ID: 6605274
• Journal Information: Combust. Flame; (United States), Vol. 68:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OXYGEN
COMBUSTION KINETICS
EXPLOSIONS
STOICHIOMETRY
SILANES
COMBUSTION PRODUCTS
MIXTURES
OXYGEN ENRICHMENT
PRESSURE EFFECTS
QUANTITY RATIO
SILICON OXIDES
SOLIDS
WATER
CHALCOGENIDES
CHEMICAL REACTION KINETICS
DISPERSIONS
ELEMENTS
ENRICHMENT
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SILICON COMPOUNDS
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry