ＤＴＡ‐ＴＧＡ同時解析による固体の逐次熱分解反応の反応速度および分解熱の決定

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タイトル別名
  • Determination of the Kinetics and Heats of the Consecutive Thermal Decomposition of Solid by Simultaneous DTA-TGA Method
  • DTA TGA ドウジ カイセキ ニヨル コタイ ノ チクジ ネツ ブンカイ

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説明

Equations were derived for determining the kinetic parameters (Z, E, n) and heat of reaction ΔH with respect to the consecutive thermal decomposition of solid by using the simultaneous DTA-TGA technique, and the theoretical DTA and TGA curves were predicted by integrating the equations numerically with varying input parameters.<BR>As a result, for evaluating the heat of decomposition from the DTA peak, it was evident that the error in measuring the DTA peak area becomes large with increase in the degree of heat capacity changes of the sample and the value of cp1/|ΔH1|, which lead to large changes on the imaginary base line. On the other hand, it was found that the kinetic parameters can be obtained by analyzing the TGA curve directly.

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