Application of isoconversional calculation procedure to non-isothermal kinetic study: III. Thermal decomposition of ammonium cobalt phosphate hydrate

作者：Chen, Zhipeng; Chai, Qian; Liao, Sen^*; He, Yu; Li, Yu; Bo, Xiahong; Wu, Wenwei; Li, Bin

来源：Thermochimica Acta, 2012, 543: 205-210.

DOI：10.1016/j.tca.2012.05.027

• Ammonium cobalt phosphate hydrate
• Non-isothermal kinetics
• Thermal decomposition
• Thermogravimetric analysis
• Solid-state reaction

The single phase NH4CoPO4 center dot H2O with layered structure was prepared via solid-state reaction at 60 degrees C. Based on the iterative isoconversional calculation procedure, the values of activation energy E-a associated with the first, second and third stages of the thermal decomposition of NH4CoPO4 center dot H2O were obtained, which demonstrate that the three stages are all a single-step kinetic process and can be adequately described by a unique kinetic triplet. The most probable reaction mechanisms of the three stages were estimated by comparison between experimental plots and modeled plots. The values of pre-exponential factor A of the three stages were obtained on the basis of Ea and the reaction mechanisms.

• 出版日期2012-9-10
• 单位广西大学