利用Popescu法研究C-CO_2气化反应机理  

Popescu method used for study on reaction mechanism of carbon gasification with CO_2

作　　者：刘忠锁[1,2] 汪琦[2] 邹宗树[1] 谭广雷[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《钢铁研究》2011年第6期12-17,共6页Research on Iron and Steel

基　　金：国家自然科学基金资助项目(50974071)

摘　　要：在非等温加热条件下采用热分析技术(热重法TG和微商热重法DTG)进行了C-CO2气化实验。利用Popescu法对C-CO2气化反应的机理函数进行了推断。结果表明,反应级数模型(n=1)是C-CO2气化的最概然机理函数。由Popescu法求得的C-CO2气化过程的活化能和指前因子分别为165.86kJ/mol和8.80×106 s-1。分别由实验数据和由等转化率法求出的活化能验证了所求得的机理函数的正确性。Popescu法是分析C-CO2气化反应机理的1种较为合理、可靠的方法。Experiments of carbon gasification with CO2 were carried out by thermal analysis techniques（thermogravimetry TG and derivative thermogravimetry DTG） under non-isothermal heating conditions.Popescu method was applied to analyze the reaction mechanism of carbon gasification with CO2.Results indicated that the reaction order model（n=1） was the most probable mechanism function.Using Popescu method,the activation energy and the pre-exponential factor for the process of carbon gasification with CO2 are 165.86 kJ/mol and 8.80×10^6 s^-1,respectively.The correctness of the obtained mechanism function is validated by experimental data and the activation energy calculated by iso-conversional method,respectively.Popescu method is a rational and reliable method for the analysis of the mechanism of carbon gasification with CO2.

关 键 词：Popescu法 碳-CO2 气化 反应机理 

分 类 号：TF55[冶金工程—钢铁冶金]