An
evaluation on thermokinetic parameters for hydrogen peroxide at various concentrations
by DSC |
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| Authors: | K Y Chen C M Lin C M Shu C S Kao |
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| Institution: | (1) Doctoral Candidate, Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology (NYUST), Yunlin, Taiwan, 64002, 123, University Rd., Sec. 3, Touliu;(2) Department of Safety, Health, and Environmental Engineering, NYUST, Process Safety and Disaster Prevention Laboratory, Yunlin, Taiwan, 64002, 123, University Rd., Sec. 3, Touliu;(3) Department of Safety, Health and Environmental Engineering, National United University, Miaoli, Taiwan, 360, 1, Lien-Da Rd. |
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| Abstract: | Information about the kinetics and thermal
decomposition of hydrogen peroxide (H2O2)
has been required for safety reasons, due to its broad applications in many
chemical industries. To determine the inherent hazards during H2O2
manufacturing, transportation, disposal, usage, and so on, this study deliberately
selected various H2O2 concentrations
and analyzed them by differential scanning calorimetry (DSC). In addition,
thermokinetic parameters were not only established for each of these reactions,
but also aimed at comprehensive, kinetic models with various tests conducted
at different heating rates.
To build up a comprehensive kinetic
model, various tests were conducted by heating rates of 1, 2, 4, 10°C
min–1, respectively. According to dynamic
DSC tests, the experimental curves show that H2O2
decomposition has one exothermic peak and may start to decompose under 47–81°C.
The total heat of decomposition is about 192–1079 J g–1.
Not only can these results prevent accidents caused by H2O2
during storage and transportation, but also assess its inherent hazards and
thereby design procedures for emergency response while runaway reactions occurring. |
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| Keywords: | DSC H2O2 kinetics runaway reactions thermal decomposition thermokinetic parameters |
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