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研究用热分解法从CdCO_3前驱体制备CdO纳米颗粒的非等温动力学。采用Malek模型模拟法和改进的非模型等转化率Vyazovkin法对所得DSC和TDA数据进行分析。结果表明,从CdCO_3制备CdO纳米颗粒的反应属于自动催化反应。Sestak-Berggren模型能很好地描述该反应过程。另外,计算得到CdCO_3热分解反应的表观活化能为(119.19±9.97)kJ/mol,并建立了该热分解反应的反应速率方程。
Study on Nonisothermal Kinetics of CdO Nanoparticles Prepared from CdCO_3 Precursor by Thermal Decomposition Method. The resulting DSC and TDA data were analyzed using the Malek model simulation and the improved non-model Vyazovkin conversion. The results show that the CdCO_3 nanoparticles prepared from CdO reaction belongs to the autocatalytic reaction. The Sestak-Berggren model describes the reaction well. In addition, the calculated apparent activation energy of the thermal decomposition reaction of CdCO_3 is (119.19 ± 9.97) kJ / mol, and the reaction rate equation of the thermal decomposition reaction is established.