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Kinetics of the Dehydration of Zn(CH3 COO)2·2H2O
Tang Dingxing*,Zhao Yun
Author NameAffiliationE-mail
Tang Dingxing* Department of Biochemical Engineering, Anhui University of Technology and Science, Wuhu 241000 tangdin7382_cn@sina.com 
Zhao Yun Department of Applied Mathematics and Physics, Anhui University of Technology and Science, Wuhu 241000  
Abstract:
The dehydration of Zn(CH3COO)2·2H2O has been studied isothermally and non-isotherm ally using TG method. The isothermal TG studies were carried out at the temperature of 61.1, 62.8, 66.2, 69.9℃. The activation energy was obtained by means of the lnt=E/RT+ln[g(α)/A]using the data at the same conversion rateα. Nonisothermal experiment was carried out at a rate of 10℃/min in 40 mL/minN2, Zn(CH3COO)2·2H2Odehydrated at 71~102℃. The data from nonisothermal experiment were analyzed by Doyle-Zsako method. Combined with the isothermal results the integral kinetic function g(α)=[-ln(1-α)]2/3 of the dehydration of Zn(CH3COO)2·2H2O activation energy 100.8 kJ/mol, preexponential factor ln(A/s-1)=36.09 and the kinetic compensation effect equation lnA=0.3339E+2.010 were found.
Key words:  Zn(CH3COO)2·2H2O, Dehydration kinetics, Thermal analysis
FundProject:安徽省教育厅自然科学基金资金资助项目(99j10033).
水合乙酸锌脱水反应的动力学
唐定兴*,赵芸
摘要:
用等温热重法和非等温热重法研究了Zn(CH3COO)2 *2H2O的脱水反应.在61.1、 62.8、 66.2、 69.9℃下的等温热重数据,由等转化率下的lnt=E/RT+ln[g(α)/A]进行拟合,确定了活化能的大小;升温速率为10℃/min的非等温热重曲线显示, Zn(CH3COO)2 *2H2O的脱水反应发生在71~102℃间,其数据通过Doyle-Zsako法进行拟合,以线性相关系数为判据,并结合等温热分析拟合结果,得到该脱水反应的积分动力学模式函数g(α)=[-ln(1-α)]2/3、活化
关键词:  Zn(CH3COO)2*2H2O  脱水动力学  热分析
DOI:10.1088/1674-0068/16/3/237-239
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