Kinetics of the reaction of chlorine atoms with vinylbromide and its use for measuring chlorine atom concentrations

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6165249

Park, J Y; Slagle, I R; Gutman, D

The reaction of chlorine atoms with vinylbromide, Cl+C/sub 2/H/sub 3/Br...>C/sub 2/H/sub 3/Cl+Br, has been tested as a titration reaction for chlorine atoms in gas-phase fast-flow reactors using both continuous and pulsed atom sources. The vinylchloride produced by this reaction was determined using photoionization mass spectrometry and was found to be an accurate measure of the in situ chlorine-atom concentration down to 5x10/sup 10/ atoms cm/sup -3/. The reaction is rapid, stoichiometric, and involves the use of easily handled substances. It is particularly well suited for use with photoionization mass spectrometer detectors because of the low ionization potentials and high photoionization cross sections of both vinylbromide and vinylchloride. The rate constant of this reaction was measured at 298 K and determined to be 1.43(+/-0.29)x10/sup 10/ cm/sup 3/ molecule/sup -1/ sec/sup -1/.

• Research Organization: Illinois Inst. of Tech., Chicago (USA). Dept. of Chemistry
• DOE Contract Number: AC02-78ER14953
• OSTI ID: 6165249
• Report Number(s): DOE/ER/14953-T2; ON: DE83006325
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE
ELEMENTS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
KINETICS
MASS SPECTROSCOPY
NONMETALS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
REACTION KINETICS
SPECTROSCOPY
TITRATION