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Spontaneous ignition limits of silane and phosphine

โœ Scribed by Shigeo Kondo; Kazuaki Tokuhashi; Hidekazu Nagai; Masaji Iwasaka; Masahiro Kaise

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
502 KB
Volume
101
Category
Article
ISSN
0010-2180

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โœฆ Synopsis

Spontaneous ignition limits of silane and phosphine have been investigated at relatively low concentrations. For silane, the spontaneous ignition occurs if the mixture concentration is such that the silane/oxygen ratio is higher than a certain threshold limit value. In other words, the mixture is not stable if the ratio is higher than a certain value. On the other hand, in the case of phosphine the threshold limit line has been found to be a little curved, though the reason for the fact is not clear. At any rate, it is concluded that the spontaneous ignition of both silane and phosphine occurs as a result of a competition of chain branching and chain breaking reactions, in a way that is qualitatively similar to that in hydrogen oxidation.

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