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Flash photolysis study of the NO‐catalyzed recombination of bromine atoms
Author(s) -
Hippler H.,
Luu S. H.,
Teitelbaum H.,
Troe J.
Publication year - 1978
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550100203
Subject(s) - chemistry , reaction rate constant , bromine , flash photolysis , recombination , diluent , limiting , photodissociation , photochemistry , analytical chemistry (journal) , kinetics , organic chemistry , mechanical engineering , biochemistry , physics , quantum mechanics , engineering , gene
The recombination of bromine atoms at room temperature has been studied by flash photolysis in the range of 1–100 atm of the inert diluent He, leading to a value for the third‐order rate constant of (1.5 ± 0.2) × 10 15 cm 6 /mol 2 .sec. In the presence of NO the recombination is considerably accelerated. The falloff curve of the recombination Br + NO (+He) → BrNO (+He) was also measured resulting in a value for the limiting low‐pressure rate constant of (3.4 ± 1.3) × 10 15 cm 6 /mol 2 .sec. In experiments with excess NO, rate constants of (2.2 ± 1) × 10 14 cm 3 /mol·sec for the reaction Br + BrNO → Br 2 + NO, and (6.1 ± 0.4) × 10 9 cm 6 /mol 2 .sec for the reaction Br 2 + 2NO → 2BrNO were obtained.