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Decomposition of hydrogen peroxide in aqueous solutions at elevated temperatures
Author(s) -
Lin C. C.,
Smith F. R.,
Ichikawa N.,
Baba T.,
Itow M.
Publication year - 1991
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.550231103
Subject(s) - decomposition , hydrogen peroxide , chemistry , reaction rate constant , aqueous solution , chemical decomposition , kinetics , catalysis , inorganic chemistry , analytical chemistry (journal) , organic chemistry , physics , quantum mechanics
Decomposition of hydrogen peroxide in high‐purity water has been measured at temperatures ranging 100 to 280°C in a laboratory test loop. A first‐order decomposition kinetics has been observed in all cases, but the decomposition rates were found to vary widely, depending on the material used in the reaction chamber. In a 4 mm ID stainless steel tubing, the decomposition rate constant is determined to be k = 2 × 10 5 exp(−14800/ RT ). This decomposition rate is approximately 100 times faster than that observed in a Teflon tubing. The variation of decomposition rate in different reaction chambers is attributed to the heterogeneous catalytic effects. There is no evidence of reaction between H 2 and H 2 O 2 in the highpurity water at temperatures up to 280°C.