Reactions of ''hot'' hydrogen atoms in the HBr--C/sub 2/H/sub 4/ system. I. Photolysis with light of wavelengths 2537 and 1849 A
A study of the reactions of H atoms in the energy range 1-2.9 eV in the HBr--C/sub 2/H/sub 4/ system is described. These reactions deserve special attention: Firstly, the value is known of the cross section for hydrogen abstraction by H atoms from HBr in the energy range 0.3-1.7 eV (sigma/sub H + HBr/ = 1.6 +- 0.3 A/sup 2/ (5)); secondly, since the absorption spectrum of hydrogen bromide extends quite far into the vacuum ultraviolet region then, using the photolysis of HBr, it is possible to follow within a single system the change in reactivity of the particles over a wide energy range; thirdly, unlike systems with saturated molecules, in the HBr--C/sub 2/H/sub 4/ system that are juxtaposed the rates of two exothermic processes with similar activation energies but with significantly different preexponential factors.
- Research Organization:
- Inst. of Chemical Physics, Moscow
- OSTI ID:
- 7276513
- Journal Information:
- High Energy Chem. (USSR) (Engl. Transl.); (United States), Vol. 9:5; Other Information: Translated from Khim. Vys. Energ.; 9: No. 5, 475-477(1975)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROBROMIC ACID
PHOTOLYSIS
HYDROGEN
HOT ATOM CHEMISTRY
CHEMICAL REACTION KINETICS
CROSS SECTIONS
ETHYLENE
GAS CHROMATOGRAPHY
ION EXCHANGE CHROMATOGRAPHY
MOLECULAR SIEVE PROCESS
THERMAL CONDUCTIVITY
ULTRAVIOLET RADIATION
ALKENES
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
CRYOGENIC FLUIDS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
NONMETALS
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHYSICAL PROPERTIES
RADIATIONS
RADIOCHEMISTRY
REACTION KINETICS
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
400701* - Radiochemistry & Nuclear Chemistry- Hot-Atom Chemistry
400500 - Photochemistry