| Ca(H_4 C_6 OHCOO)_2·2H_2 O在空气中失水过程热动力学研究 |
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| 引用本文： | 孙秋香,张梅芳,刘蒙,张克立.Ca(H_4 C_6 OHCOO)_2·2H_2 O在空气中失水过程热动力学研究[J].华中师范大学学报(自然科学版),2009,43(4). |
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| 作者姓名： | 孙秋香 张梅芳 刘蒙 张克立 |
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| 作者单位： | 1. 湖北第二师范学院化学系,武汉,430205
2. 武汉大学化学与分子科学学院,武汉,430072 |
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| 基金项目： | 国家自然科学基金，湖北第二师范学院校管重点课题 |
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| 摘 要： | 用热分析(TG/DTG)技术研究了固态水杨酸钙(Ca(H_4C_6OHCOO)_2·2H_2O)在空气中的热分解过程.热分析结果表明,Ca(H_4C_6OHCOO)_2·2H_2O在空气中分4步分解.用Friedman法、Flynn-Wall-Ozawa(FWO)法和ASTM E698法求取了Ca(H_4C_6OHCOO)_2·2H_2O(s)失水过程的活化能E,并通过多元线性回归法给出了可能的机理函数.
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| 关 键 词： | Ca(H_4C_6OHCOO)_2·2H_2O 失水过程 非等温动力学 Ca(H_4C_6OHCOO)_2 · 2H_2O |
Thermal kinetics of dehydration process of Ca(H_4C_6OHCOO)_2·2H_2O in air |
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| SUN Qiuxiang,ZHANG Meifang,LIU Mong,ZHANG Keli.Thermal kinetics of dehydration process of Ca(H_4C_6OHCOO)_2·2H_2O in air[J].Journal of Central China Normal University(Natural Sciences),2009,43(4). |
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| Authors: | SUN Qiuxiang ZHANG Meifang LIU Mong ZHANG Keli |
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| Abstract: | The thermal decomposition processes taking place in the solid-state Ca(H_4C_6OHCOO)_2 · 2H_2O have been studied in air using TG/DTG techniques. TG/ DTG curves showed that the decomposition proceed through four well-defined step in air. The activation energies of dehydration process were calculated through the Friedman, Flynn-Wall-Ozawa and ASTM E698 methods, and the possible comversion functions are estimated through the multiple-linear regression method. |
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| Keywords: | TG/DTG TG/DTG dehydration process non-isothermal kinetics |
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