Ca（H₄C₆OHCOO）₂·2H₂O在空气中的热分解动力学研究

Ca（H 4 C 6 OHCOO） 2 ·2H 2 O在空气中的热分解动力学研究 Kinetics of Thermal Decomposition of Ca（H 4 C 6 OHCOO） 2 ·2H 2 O in Air 孙秋香 SUN Qiuxiang1 1 first-author 曹瑰华 CAO Guihua2 2 张梅芳 ZHANG Meifang2 2 张克立 ZHANG Keli2 2 湖北第二师范学院化学系 湖北第二师范学院化学系 Department of Chemistry,Hubei University of Education Department of Chemistry,Hubei University of Education 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 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. Ca（H4C6OHCOO）2·2H2O 热分解 多重扫描速率法 Ca（H4C6OHCOO）2·2H2O thermal decomposition multiple scanning method 10.14188/j.1671-8836.2010.01.005 O643.12 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） 2010-01-01 2021-04-01 1 56