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Influence of H 2 O 2 on a chloride‐dependent reaction path to chlorine dioxide
Author(s) -
Crump Brian,
Ernst William R.,
Neumann H. M.
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690441116
Subject(s) - chlorate , sodium chlorate , hydrogen peroxide , chlorine dioxide , chemistry , inorganic chemistry , chlorine , chloride , hydrogen chloride , sulfuric acid , organic chemistry
Reaction paths governing chlorine dioxide formation from solutions of sodium chlorate, sulfuric acid, hydrogen peroxide and sodium chloride at 25°C were examined. Chlorine dioxide was formed by two paths: the reduction of chlorate by hydrogen peroxide and the reduction of chlorate by chloride. At conditions of this study, the rate of the chloride‐chlorate path predominated and was enhanced by hydrogen peroxide, reaching an upper limit as hydrogen peroxide concentration was increased. A mechanism was proposed that explains the observed behavior. It is based on existing theory, but includes a new step: the rapid reaction of hydrogen peroxide with an intermediate, Cl 2 O 2 . It was shown also that chloride was not required to sustain chlorine dioxide formation in the hydrogen peroxide‐chlorate path.