模式配合法研究固体反应动力学的可靠性  

Dependability of model-fitting approach to research solid reaction kinetic

作　　者：谭广雷[1] 唐丹[2] 牟涛[1] 王晓民[1] 汪琦[3] 

机构地区：[1]营口理工学院化学工程系,辽宁营口115014 [2]鞍山森远路桥股份有限公司,辽宁鞍山114051 [3]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2015年第6期401-403,417,共4页Journal of University of Science and Technology Liaoning

基　　金：辽宁省教育厅科学研究一般项目(L2015552);营口理工学院院级科研项目(YYL201506)

摘　　要：应用模式配合法对碳酸钙热分解非等温动力学进行了分析。模式配合法求得的动力学三因子对反应进程进行预测时,实测值与预测值产生较大偏差。产生偏差的主要原因是求解动力学三因子的过程中,温度积分精确解与其近似解的误差和线性回归模型对实际样本值预测产生的误差被放大。因此,非等温动力学模式配合解析法得到的动力学三因子可靠性值得商榷。The model-fitting approach has been applied to kinetic analysis of non-isothermal thermal decomposition of calcium carbonate. The kinetic triplet obtained from model-fitting does not give excellent fits for the extent of conversion and yields highly deviation between the experimental results and the prediction results. The main reason of yielding deviation is that the deviations of the temperature integral approximation from the exact solution and the linear regression model to forecast the value of actual sample are amplified in processes of determining the ＂kinetic triplet＂. Therefor, the dependability of the kinetic triplet obtained from model-fitting are ambiguous in non-isothermal kinetics.

关 键 词：模式配合法 非等温动力学 动力学三因子 偏差 

分 类 号：O643.12[理学—物理化学]