| 水杨酸钴非等温热分解动力学研究 |
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| 引用本文： | 孙秋香,王丽娜,李鹏,张克立. 水杨酸钴非等温热分解动力学研究[J]. 分析科学学报, 2007, 23(4): 373-377 |
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| 作者姓名： | 孙秋香 王丽娜 李鹏 张克立 |
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| 作者单位： | 武汉大学化学与分子科学学院,武汉,430072;湖北教育学院化学系,武汉,430205;武汉大学化学与分子科学学院,武汉,430072;武汉大学化学与分子科学学院,武汉,430072;武汉大学纳米科学和技术研究中心,武汉,430072 |
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| 摘 要： | 用热分析(TG/DTG)、X射线衍射(XRD)技术研究了固态物质水杨酸钴在空气中热分解的过程。热分析结果表明,水杨酸钴在空气中分两步分解,其失重率与理论计算失重率相吻合;XRD结果表明,水杨酸钴分解的终产物为Co3O4。用Friedman法和Flynn-Wall-Ozawa(FWO)法求取了分解过程的活化能E,并用多元线性回归和多元非线性回归法给出了可能的机理函数,由这些方法得到的动力学数据相互比较吻合。
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| 关 键 词： | 水杨酸钴 热分析 X射线衍射 热分解 机理 动力学 |
| 文章编号： | 1006-6144（2007）04-0373-05 |
| 修稿时间： | 2006-12-25 |
Kinetics of Non-isothermal Thermal Decomposition of Cobaltous Salicylate |
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| SUN Qiu-xiang,WANG Li-na,LI Peng,ZHANG Ke-li. Kinetics of Non-isothermal Thermal Decomposition of Cobaltous Salicylate[J]. Journal of Analytical Science, 2007, 23(4): 373-377 |
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| Authors: | SUN Qiu-xiang WANG Li-na LI Peng ZHANG Ke-li |
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| Affiliation: | 1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072; 2. Centre of Nanoscience and Nanotechnology Research, Wuhan University, Wuhan 430072 ; 3. Department of Chemistry, Hubei Institute of Education, Wuhan 430205 |
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| Abstract: | The thermal decomposition processes of the solid state cobaltous salicylate have been studied in air using TG-DTG and XRD techniques.TG-DTG curves showed that the decomposition proceeded through two well-defined steps in air.Mass loss of the thermal decomposition of cobaltous salicylate was in good agreement with the theoretica1 mass 1oss.XRD showed that the final product of the thermal decomposition was Co3O4.The activation energies were calculated through the Friedman and Flynn-Wall-Ozawa(FWO) methods,and the possible conversion functions have been estimated through the multiple linear regression method and the multiple non-linear regression method respective1y. |
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| Keywords: | Cobaltous salicylate TG/DTG XRD Thermal decomposition Mechanism Kinetics |
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