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The gas-phase decomposition of methylsilane. Part I. Mechanism of decomposition under shock-tube conditions

✍ Scribed by B. A. Sawrey; H. E. O'Neal; M. A. Ring; D. Coffey Jr.

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 738 KB
Volume: 16
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550160104

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✦ Synopsis

The gas-phase decompositions of methylsilane and methylsilane-d3 have been investigated in a single-pulse shock tube at 4700 torr total pressure in the temperature range of 1125-1250 K. For CH3SiD3 at 1200 K three primary steps occur in the homogeneous decomposition with efficiencies in parentheses: CH3SiD3 1, CH3SiD + D2 (0.711, CH3SiD3 CHI + SiD2 (0.15), and CH3SiD3 A CHz=SiDz + HD (0.14). For CH3SiH3 at 1200 K the primary CH4 elimination efficiency is 0.09 while the total primary Hz elimination efficiency is 0.91. Minor product formations of CzH4, acetylene, dimethylsilane, and SiH4 are discussed.

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