| Summary: | 碩士 === 國立雲林科技大學 === 環境與安全工程技術研究所 === 88 === In the 1980s, the Accelerating Rate Calorimeter (ARC) made an advance in thermal hazard analysis, because it could record temperature and pressure data more accurately within the region of self-decomposition reaction under approximately adiabatic conditions. Although ways to keep adiabatic conditions may be similar, test cell (bomb) and sensitiveness are not the same in ARC as in other adiabatic calorimeters. However, the operating procedures--Heat-Wait-Search (H-W-S)--are all the same. In this study, an improved operating procedure was used to find the slow first step-catalytic reaction in hydrogen peroxide in the presence of hydrochloric acid. In these two reactions, the hydrochloric acid concentration decreases with the activation energy of the first catalytic reaction and then increases with the activation energy of the second self-decomposition reaction. The temperature at which the catalytic and self-decomposition reaction intersect in the experiment operated by the improved method is the onset temperature of the experiment operated by the standard operating procedure. By the improved operating procedure, the duration of the first catalytic reaction increases with hydrochloric acid concentration being decreased. Operating by the improved method can compensate tmr at the lower temperature (40℃ to onset temperature), which cannot be done by using the standard operating procedure, and can modify the tmr at higher temperature.
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