【作者】 王晓红； 陆洪林； 王景荣； 王民昌； 涂健； 刘子如；

【Author】 Wang Xiaohong;Lu Honglin;Wang Jingrong;Wang Minchang;Tu Jian;Liu Ziru;Xi’an Modern Chemistry Research Institute;

【机构】 西安近代化学研究所；

【摘要】 本文应用DSC/TG-MS-FTIR同步热分析-红外质谱联用技术研究了CaC2O4·H2O的分解过程及分解机理,从微观角度生成的气体产物的动态分布及气体产物的生成动力学方面对CaC₂O₄·H₂O的分解机理进行了研究,实验结果表明,CaC₂O₄·H₂O分解生成气体产物为H₂O,CO and CO₂,并用热分析动力学数据处理的Ozawa和Coats-Redfern方法研究了气体产物的生成动力学参数,验证了CaC₂O₄·H₂O的经典的分解机理的正确性。更多还原

【Abstract】 The thermal decomposition and mechanism of CaC₂O₄·H₂O were investigated by using DSC/TG-MS-FTIR technology together.With the thermal decomposition of CaC₂O₄·H₂O,、H₂O,CO and CO₂ are detected in gas phase by simultaneous TG-DSC-FTIR-MS techniques.The curves of TIR and TMS for correlation of conversion with respect to temperature were obtained,which were based on the changes of relative IR and MS intensity of characteristic gas products corresponding temperature.The kinetics parameters of gas product formations identified from IR and MS were obtained by Ozawa and Coats-Redfern equations.These parameters would be demonstrated the decomposition mechanism which would rather closely to the microcosmic processes.The results show that the new method following by TG-DSC-FTIR-MS technologies and kinetics is an important way to investigate the thermal decomposition and mechanism of compounds.更多还原