| 二水合草酸锰脱水过程的机理函数判别和动力学研究 |
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| 引用本文： | 李靖华,陈文涛.二水合草酸锰脱水过程的机理函数判别和动力学研究[J].河南师范大学学报(自然科学版),1992,20(4):79-83. |
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| 作者姓名： | 李靖华 陈文涛 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系，河南师范大学化学系，南阳师专 |
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| 摘 要： | 本文用等温热重分析法和线性升温热重分析法研究了二水合草酸锰的脱水过程,提出了过程机理函数的三步判别法。实验测定和理论分析表明,MnC_2O_4·2H_2O的脱水过程受A_2机理支配,也就是一种随机成核和晶核随后生长的过程,其活化能E=75.49kl/mol,频率因子A=6.166×10_8min~(-1)。动力学补偿效应为:logA=0.1318E-1.2682
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| 关 键 词： | 草酸锰 动力学 热重分析 |
IDENTIFICATION OF MECHANISM FUNCTION AND KINECTIC INVESTIGATION ON THERMAL DEHYDRATION of MnC_2O_4·2H_2O |
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| Li Jinghua,Zhang Gui'en,Wang Geming et al.IDENTIFICATION OF MECHANISM FUNCTION AND KINECTIC INVESTIGATION ON THERMAL DEHYDRATION of MnC_2O_4·2H_2O[J].Journal of Henan Normal University(Natural Science),1992,20(4):79-83. |
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| Authors: | Li Jinghua Zhang Gui'en Wang Geming |
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| Institution: | Li Jinghua;Zhang Gui'en;Wang Geming et al Department of Chemistry |
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| Abstract: | The dehydration of MnC_2O_4·2H_2O was studied by means of thermogravimetry both atconstant temperature and at linearly increasing temperature.Tri-stage identification of a function de-pending on the mechanism was suggested.Experiment and theory show that thermal dehydration ofMnC_2O_4·2H_2O is regulated by an A_2 mechanism.Activation energy E=75.49kJ/mol,frequency factorA=6.166×10~8 min~(-1).Its kinetic compensition effect is:logA=0.1318E-1.2682 |
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| Keywords: | manganese oxalate kinetics thermogravimetry |
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