Kinetics of the reaction of chlorine atoms with vinyl bromide and its use for measuring chlorine-atom concentrations

Journal Article · Thu May 12 04:00:00 EDT 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100233a032· OSTI ID:5919671

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

The reaction of chlorine atoms with vinyl bromide, 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 vinyl chloride produced by this reaction was determined by using photoionization mass spectrometry and was found to be an accurate measure of the in situ chlorine-atom concentration down to 5 x 10/sup 10/ atoms cm/sup -3/. The reaction is rapid and 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 vinyl bromide and vinyl chloride. The rate constant of this reaction was measured at 298/sup 0/K and determined to be 1.43 (+-0.29) x 10/sup -10/ cm/sup 3/ molecule/sup -1/ s/sup -1/.

• Research Organization: Illinois Inst. of Tech., Chicago
• OSTI ID: 5919671
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:10; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500 -- Photochemistry
ATOMS
BROMINATED ALIPHATIC HYDROCARBONS
BROMINE
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE
DATA
ELECTRIC DISCHARGES
ELECTROMAGNETIC RADIATION
ELEMENTS
EXPERIMENTAL DATA
FLOW RATE
FLUIDS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
HELIUM
HIGH-FREQUENCY DISCHARGES
INERT ATMOSPHERE
INFORMATION
IONIZATION
KINETICS
LASER RADIATION
LOW PRESSURE
MASS SPECTRA
MEDIUM TEMPERATURE
MEDIUM VACUUM
NONMETALS
NUMERICAL DATA
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOIONIZATION
PRESSURE DEPENDENCE
PULSE TECHNIQUES
QUANTITY RATIO
RADIATIONS
RARE GASES
REACTION KINETICS
SAMPLING
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE
TITRATION
YIELDS