Research on the explosion characteristics of chlorine dioxide gas

The explosion characteristics of chlorine dioxide gas have been studied for the first time in a cylindrical exploder with a shell capacity of 20 l. The experimental results have indicated that the lower concentration limit for the explosive decomposition of chlorine dioxide gas is 9.5% ([ClO 2]/[air...

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Published in:Chinese chemical letters 2008-11, Vol.19 (11), p.1375-1378
Main Authors: Jin, Ri Ya, Hu, Shuang Qi, Zhang, Ying Hao, Bo, Tao
Format: Article
Language:English
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Chlorine dioxide gas
Explosion limit
Explosive decomposition
Pressure of explosion
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description The explosion characteristics of chlorine dioxide gas have been studied for the first time in a cylindrical exploder with a shell capacity of 20 l. The experimental results have indicated that the lower concentration limit for the explosive decomposition of chlorine dioxide gas is 9.5% ([ClO 2]/[air]), whereas there is no corresponding upper concentration limit. The maximum pressure of explosion relative to the initial pressure was measured as 0.024 MPa at 10% ClO 2 and 0.641 MPa at 90% ClO 2. The induction time (the time from the moment of sparking to explosion) at 10% ClO 2 was 2195 ms, but at 90% ClO 2 the induction time was just 8 ms. The explosion reaction mechanism of ClO 2 is of a degenerate chain-branching type involving the formation of a stable intermediate (Cl 2O 3), from which the chain branching occurs.
doi_str_mv 10.1016/j.cclet.2008.09.001
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subjects Chlorine dioxide gas
Explosion limit
Explosive decomposition
Pressure of explosion
title Research on the explosion characteristics of chlorine dioxide gas
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