| 纯三水铝石在NaOH溶液中溶出过程最可机函数和动力学参数(英文) |
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| 引用本文： | 鲍丽,张廷安,刘燕,豆志河,吕国志,王晓民,马佳,蒋孝丽.纯三水铝石在NaOH溶液中溶出过程最可机函数和动力学参数(英文)[J].中国化学工程学报,2010,18(4):630-634. |
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| 作者姓名： | 鲍丽 张廷安 刘燕 豆志河 吕国志 王晓民 马佳 蒋孝丽 |
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| 作者单位： | Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| 基金项目： | the Research Fund for the Doctoral Program of Higher Education;the Science and Technology Talents Fund for Excellent Youth of Liaoning Province |
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| 摘 要： | Determination of probable mechanism function and kinetic parameters is important to hydrometallurgical kinetics.In this work,the most probable mechanism function and kinetic parameters of gibbsite dissolution in NaOH solution are studied.The sample,the mixture of synthetic gibbsite and sodium hydroxide solution,was scanned in high-pressure differential scanning calorimetry(DSC) equipment with the heating rate of 10 K·min-1. Integral equation and differential equation of non-isothermal kinetics were solved to fit the data related to DSC curve.According to the calculation results,the most probable mechanism function for pure synthetic gibbsite dissolution in sodium hydroxide solution is presented based on the optimum procedure in the database of the mechanism function.The apparent activation energy obtained is(75±1) kJ·mol-1,the frequency factor is 10 8±1mol·s-1,and the reaction is a second order reaction.
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| 关 键 词： | gibbsite kinetic parameter mechanism function integral equation differential equation |
| 收稿时间： | 2009-9-20 |
| 修稿时间： | 2009-9-20
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The most probable mechanism function and kinetic parameters of gibbsite dissolution in NaOH |
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| BAO Li,ZHANG Ting''an,LIU Yan,DOU Zhihe,LÜ,Guozhi,WANG Xiaomin,MA Jia,JIANG Xiaoli.The most probable mechanism function and kinetic parameters of gibbsite dissolution in NaOH[J].Chinese Journal of Chemical Engineering,2010,18(4):630-634. |
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| Authors: | BAO Li ZHANG Ting'an LIU Yan DOU Zhihe LÜ Guozhi WANG Xiaomin MA Jia JIANG Xiaoli |
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| Affiliation: | Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| Abstract: | Determination of probable mechanism function and kinetic parameters is important to hydrometallurgical kinetics. In this work, the most probable mechanism function and kinetic parameters of gibbsite dissolution in NaOH solution are studied. The sample, the mixture of synthetic gibbsite and sodium hydroxide solution, was scanned in high-pressure differential scanning calorimetry (DSC) equipment with the heating rate of 10 K&;#8226;min&;#61485;1. Integral equation and differential equation of non-isothermal kinetics were solved to fit the data related to DSC curve. According to the calculation results, the most probable mechanism function for pure synthetic gibbsite dissolution in sodium hydroxide solution is presented based on the optimum procedure in the database of the mechanism function. The apparent activation energy obtained is (75±1) kJ&;#8226;mol&;#61485;1, the frequency factor is 108±1 mol&;#8226;s&;#61485;1, and the reaction is a second order reaction. |
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| Keywords: | gibbsite kinetic parameter mechanism function integral equation differential equation |
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