Chemical kinetics on thermal decompositions of dicumyl peroxide studied by calorimetry

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• 作者：Yih-Shing Duh ; Chen-San Kao…
• 关键词：Organic peroxide ; Dicumyl peroxide ; Chemical kinetics ; Thermal decomposition ; Calorimetry
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：127
• 期：1
• 页码：1089-1098
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
• 出版者：Springer Netherlands
• ISSN：1588-2926
• 卷排序：127

文摘

An overview in the field of chemical kinetics on the thermal decomposition of dicumyl peroxide (DCPO) is implemented in this study. Thermal data are detected by heat flow or adiabatic calorimeters. Chemical kinetics on the thermal decomposition of DCPO obeys nth-order reaction and the type of Arrhenius equation. In the neat state of DCPO, activation energy and logA behave with good precision in an averaged value of (131.4 ± 4.3) and (13.5 ± 0.6) kJ mol−1 are determined by DSC. The averaged activation energy and logA are determined to be (129.3 ± 4.7) and (13.6 ± 0.3) kJ mol−1 by the accelerating rate calorimeter. DCPO diluted in cumene or gray paste, activation energy and logA (A in s−1) have an averaged value of (132.7 ± 6.5) and (13.6 ± 0.5) kJ mol−1 determined by DSC. However, DCPO diluted in cumene, activation energy and logA (A in s−1) have an averaged value of (144.5 ± 9.1) and (15.6 ± 2.0) kJ mol−1 determined by Phi-TEC calorimeter. logA (A in s−1) has the distribution from 10.1 to 16.6 in neat DCPO and from 10.96 to 17.6 in diluted DCPO, respectively. Activation energy distributes, respectively, from 117 to 173 kJ mol−1 in neat DCPO and from 112.8 to 156.6 kJ mol−1 in diluted DCPO. Published data in relation to the kinetics and mechanism on thermal decomposition of DCPO are summarized and discussed.