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Mechanism of the ClO 2 generation from the H 2 O 2 ‐HClO 3 reaction
Author(s) -
Yin Guohong,
Ni Yonghao
Publication year - 2000
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450780427
Subject(s) - chlorine , induction period , hydrogen peroxide , chemistry , hydrogen chloride , chloride , chlorine dioxide , inorganic chemistry , catalysis , methanol , steady state (chemistry) , reaction mechanism , organic chemistry
The development of chlorine containing species during the hydrogen peroxide‐based chlorine dioxide generation process has been determined. Accordingly, two distinct phases, namely the induction period and the steady‐state phase, were identified. In the induction period, it was observed that chloride and chlorous acid are generated, while chlorine, a byproduct from some methanol‐based processes, is not detectable. The absence of chlorine is explained by the fast reaction kinetics between hydrogen peroxide and chlorine, which results in the formation of chloride. In the steady‐state phase, due to the accumulation of chloride and chlorous acid during the induction period, the reaction between chloric acid and chlorous acid, which is responsible for the generation of chlorine dioxide in the hydrogen peroxide‐based ClO 2 process, becomes possible. Chloride is a catalyst in such a reaction.