| 四氯合锌(Ⅱ)酸二烷基铵及其二元体系固-固相变贮热的动力学研究 |
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| 引用本文： | 康艳珍.四氯合锌(Ⅱ)酸二烷基铵及其二元体系固-固相变贮热的动力学研究[J].吕梁高等专科学校学报,2007,23(1):18-22. |
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| 作者姓名： | 康艳珍 |
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| 作者单位： | 吕梁高等专科学校,化学系,山西,吕梁,033000 |
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| 基金项目： | 河北省自然科学基金资助项目(202139) |
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| 摘 要： | 用DSC技术研究CnZnCl(n=12,14,16,18)及其C14ZnCl/C16ZnCl二元体系固-固相变的动力学,借助动力学方程Kissinger法和Ozawa法计算固-固相变过程的动力学参数—活化能(Ea)和反应级数(n),两种方法的结果相符.结果表明它们的固-固相变级数均为1和纯物质的活化能随链长的增加而减小;比较纯物质与二元体系的活化能,发现二元体系的活化能相对较低,因此,从动力学角度讲,二元体系的相变较容易发生.所以在相同的条件下,可以优先考虑应用二元体系.
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| 关 键 词： | CnZnCl 固-固相变 储能物质 DSC研究 动力学 |
| 文章编号： | 1008-7834(2007)01-0018-05 |
| 修稿时间： | 2007年1月10日 |
Dynamics of Storing Heat in Double Solid State Change |
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| KANG Yan-zhen.Dynamics of Storing Heat in Double Solid State Change[J].Journal of Luliang Higher College,2007,23(1):18-22. |
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| Authors: | KANG Yan-zhen |
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| Abstract: | This paper reports the study of solid-solid phase transitions kinetics in bis(n-alkylammonium) tetrachlorozincate(II) and their binary system by using DSC technique.Kissinger and Ozawa methods are applied to determine the activation energy and the reaction order of the solid-solid phase transitions and come to the same onclusion..The conclusion is drawn that the reaction order of their solid-solid phase transition is one and Ea for pure compounds CnZnCl decreases with increasing the chain length.Compared Ea of pure compounds with binary system,the later has a low Ea,which can make the phase change of the binary system take place easily.Therefore,at the same condition,we can take the binary system as our first choice. |
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| Keywords: | CnZnCl solid-solid phase transitions energy storage DSC method kinetics |
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