差减微分法研究碳酸钙热分解动力学  

Application of Diffrentail-minusderivation Method to the Study of Thermal Decomposition Kinetics of Calcium Carbonate

作　　者：宋军[1] 王鉴[1] 汪丽 邴国强[1] 祝宝东[1] 

机构地区：[1]东北石油大学化学化工学院,大庆163318 [2]中国石油大庆炼化公司,大庆163411

出　　处：《硅酸盐通报》2012年第5期1294-1297,共4页Bulletin of the Chinese Ceramic Society

摘　　要：采用热重法对CaCO3热分解过程进行了实验研究。结合TG曲线和DTG曲线,利用差减微分法对实验数据进行处理,得到碳酸钙的动力学参数:活化能E=208.0693 kJ/mol、反应级数n=0.51904、表观频率因子A=2.613×108s-1,进而确定反应机理函数的微分式为f(α)=(1-α)0.51904。The thermal decomposition process of CaCO3 was investigated by thermogravimetry experimentally. The diffrentail minusderivation method are applied to treat TG and DTG data in order to derive the kinetic parameters of calcium carbonate ： the activation energy E = 208. 0693 kJ/mol, reaction order n =0. 51904, the apparent frequency factor A = 2. 613 × 108 s-I, and the differential equation of reaction mechanism function f（α） = （1 - α）o. 51904 is determined.

关 键 词：碳酸钙 热分析 动力学 差减微分法 

分 类 号：O643[理学—物理化学]