'HOT' RADICAL REACTIONS IN FLASH PHOTOLYSIS.
Abstract
The flash photolysis of hydrogen iodide in the presence of perdeutero-hydrocarbons was found to yield H2 and HD. The results were subjected to kinetic analysis. uthe effects of inert gas moderators were studied obtain/ng an indication of the extent to which non reactive collisions between 'hot' hydrogen atoms and these hydrocarbons are inelastic. The results obtained are consistant with those obtained in low intensity studies. The Hg(triplet-P1) photosensitized decomposition of GeH4 appears to proceed by rupture of a Ge-H bond. The H atoms formed in the primary process were found to be unscavengeable by 5 added propylene. It is proposed that the abstraction reaction, H+GeH4 to H2+GeH3, is very rapid and/or that the hydrogen atoms formed in the primary process carry some of the excess energy of the reaction. The rapid consumption of higher hydrides of germanium is partly attributed to their reactions with germyl radicals. The flash photolysis of methyl iodide was found to yield methane, ethane, ethylene, acetylene and iodine. The major mechanism of methane formation changes from low to high intensity increasing the quantum yield for methane production from 0.02 to 0.15. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 25, 1966
- Accession Number
- AD0632463
Entities
People
- G. J. Mains
Organizations
- Carnegie Institute of Technology