Accession Number : ADA140426

Title :   Laser-Induced Decomposition of Some Allyl Halides.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL AL RESEARCH DIRECTORATE

Personal Author(s) : McDonald,J K ; Merritt,J A

PDF Url : ADA140426

Report Date : 23 Nov 1983

Pagination or Media Count : 30

Abstract : CO2 laser-induced decomposition of several allyl halides has been performed, and where possible, results were compared to pyrolysis studies. Allyl chloride was found to follow a very complex reaction mechanism. The decomposition was observed to have a larger radical chain mechanism than reported for pyrolysis. Allyl bromide was observed to follow a reaction mechanism similar to pyrolysis, while allyl fluoride was found to follow mainly a unimolecular mechanism. Kinetic studies of allyl bromide and chloride were also performed. The bromide and chloride were determined to follow a first and three-halves overall reaction order, respectively. Most of the products observed from laser-induced decomposition are also formed in pyrolysis; however, differences in concentrations were also observed. Formations of polymeric deposits were found to be small. Benzene was one of the main products in all of the allyl halide decompositions. Chlorobenzene and toluene were produced from the laser-induced decomposition of 2,3-dichloropropene and 2-methyl-3-chloropropene, respectively.

Descriptors :   *Lasers, *Decomposition, *Halides, *Bromides, *Chlorides, *Fluorides, *Pyrolysis, Comparison, Chlorobenzene, Toluenes, Propenes, Chemical reactions, Chain reactions, Reaction kinetics, Photochemical reactions, Reaction time, Chemical radicals, Carbon dioxide lasers, Infrared spectra, Tables(Data)

Subject Categories : Inorganic Chemistry
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE