Weixiang Liang , Zixin Ye , Dongfang Hu , Jinxin Xu , Juncheng Jiang , Thomas Fröhlich , Jiong Ding
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引用次数: 0
Abstract
Currently, the commonly used performance evaluation approach for accelerating rate calorimeters (ARCs) is based on di‑tert‑butyl peroxide (DTBP). However, DTBP is not a certified reference material that contains untraceable and inaccurate thermodynamic and kinetic parameters. To address this issue, an evaluation approach using Joule heat was proposed. The key point of this approach is the use of Joule heat to simulate the exothermic process of a chemical reaction. First, an evaluation apparatus with reaction rate feedback control was developed. Subsequently, exothermic reaction experiments using the DTBP/toluene solution were simulated. The experimental results indicated that the thermodynamic and kinetic parameters obtained using this approach align with the preset values and exhibit good repeatability. This approach is traceable and can be traced back to the International System of Units, which facilitates reliable performance evaluation of commercial ARCs.
期刊介绍:
Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application.
The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta.
The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas:
- New and improved instrumentation and methods
- Thermal properties and behavior of materials
- Kinetics of thermally stimulated processes