Ca(H_4C_6OHCOO)_2·2H_2O在空气中的热分解动力学研究  

Kinetics of Thermal Decomposition of Ca(H_4C_6OHCOO)_2·2H_2O in Air

作　　者：孙秋香[1] 曹瑰华[2] 张梅芳[2] 张克立[2] 

机构地区：[1]湖北第二师范学院化学系,湖北武汉430205 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2010年第1期15-20,共6页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金资助项目(20071026);湖北第二师范学院校管重点课题资助(2007A002)

摘　　要：用无模式等转化率法和多元非线性回归法及多元线性回归法研究了Ca(H4C6OHCOO)2.2H2O在空气中热分解动力学.结果表明,其第2步分解为两步连串反应,反应模型为CnB→Fn;第3步分解也为两步连串反应,反应模型为D4→Fn;第4步分解反应为简单一步反应,反应模型为Bna,即指数为a的自催化n级反应.并分别得到了第2至第4步分解反应的动力学三因子.Kinetics of thermal decomposition of solid state Ca（H4C6OHCOO）2·2H2O in air have been studied using model-free isoconversional method, multivariate non-linear regression and multivariate linear regression. The results showed that second decomposition processes through a two-step consecutive reaction, and the modelling as two-step consecutive reaction is CnB→Fn;Also, the third decomposition processes through a two-step consecutive reaction. The modelling as two-step consecutive reaction is D4→Fn the fourth decomposition processes through a single-step reaction. Reaction modelling is Bna, namely the reaction of n-order of autocatalysis of index a. Three kinds of materials of kinetics are obtained respectively from the second to the fourth step of thermal decomposition reaction.

关 键 词：Ca(H4C6OHCOO)2·2H2O热分解 多重扫描速率法 

分 类 号：O643.12[理学—物理化学]