文献类型：期刊文献

英文题名：Mechanism study on carbon reducing reaction in the preparation process of strontium carbonate (SrCO3)

作者：Meng, Jun[1]; Liu, Gousheng[1]; Zhao, Hongyu[1]; Wang, Lijuan[1]; Yu, Jianguo[1]

机构：[1] Institute of Resources Process Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China

年份：2009

卷号：4

期号：5

起止页码：586

外文期刊名：Asia-Pacific Journal of Chemical Engineering

收录：EI(收录号：20100212624228)

语种：英文

外文关键词：Carbonation - Activation analysis - Thermoanalysis - Reaction kinetics - Carbon - Activation energy - Thermodynamics

摘要：The mechanism for preparation of strontium carbonate (SrCO3) by the method of carbon reducing reaction is studied in this paper. Based on the mass ratio of SrSO4/C = 1.5 for this reaction, thermodynamics and kinetics calculation are conducted and also verified by TG-DSC experimental methods. For each side reaction, the changes of standard molar Gibbs function at proposed temperature are calculated through Gibbs-Helmholtz, Van't Hoff and Kirchhoff equations. TG-DSC data are used to explore the mechanism of the reaction, and to calculate the apparent activation energy and reaction orders. It has been demonstrated by TG and DSC thermal analysis for the whole reducing reaction that the apparent activation energy E is 350.6 and 307.3 kJ·mol-1, and the reaction orders n are 0.91 and 0.88, respectively. ? 2009 Curtin University of Technology and John Wiley & Sons, Ltd.