| 碱式碳酸锌在二氧化碳气氛下的热分解动力学 |
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| 引用本文： | 刘艳华,赵旭,周兵,马兵,王子忱.碱式碳酸锌在二氧化碳气氛下的热分解动力学[J].吉林大学学报(理学版),2005,43(5):680-682. |
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| 作者姓名： | 刘艳华 赵旭 周兵 马兵 王子忱 |
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| 作者单位： | 吉林大学,化学学院,长春,130021;松原市重点项目办公室,吉林省,松原,138000 |
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| 摘 要： | 运用TG/SDTA同步分析仪， 研究了碱式碳酸锌在流动二氧化碳气氛中的热分解过程及热分解动力学. 探讨了加热速率对反应过程的影响. 采用Friedman法对实验数据进行分析，结果表明，反应的活化能数值随着分解率的不同而变化， 由此推断该反应是由多步反应组合而成的，其平均表观活化能Ea为286.84 kJ/mol.
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| 关 键 词： | 碱式碳酸锌 热分解动力学 活化能 |
| 文章编号： | 1671-5489(2005)05-0680-03 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005年3月7日 |
Kinetics of Thermal Decomposition of Basic Zinc Carbonate in CO2 Atmosphere |
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| LIU Yan-hua,ZHAO Xu,ZHOU Bing,MA Bing,WANG Zi-chen.Kinetics of Thermal Decomposition of Basic Zinc Carbonate in CO2 Atmosphere[J].Journal of Jilin University: Sci Ed,2005,43(5):680-682. |
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| Authors: | LIU Yan-hua ZHAO Xu ZHOU Bing MA Bing WANG Zi-chen |
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| Institution: | (1. College of Chemistry, Jilin University, Changchun 130021, China； 2. Songyuan Key Projects Office， Songyuan 138000， Jilin Province, China) |
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| Abstract: | Dynamic kinetic analyses were performed for the thermal decomposition of basic zinc carbonate by means of TG and SDTA measurements in CO2. The thermal behavior and the kinetics of the decomposition were studied. The effect of heating rate on the kinetics was investigated. To estimate the activation energy of the decomposition, the Friedman isoconversional method was applied. The activation energy (Ea) was calculated as a function of conversion (α). The results confirm that more than one reaction occurs in the decomposition of basic zinc carbonate. The activation energy obtained in CO2 atmosphere is 286.84 kJ/mol. |
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| Keywords: | basic zinc carbonate decomposition kinetics activation energy |
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