文献类型：会议论文

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

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

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

会议论文集：The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)论文集

会议日期：20080804

会议地点：大连

主办单位：中国化工学会;中国化工企业管理协会;中国石油和化学工业协会

语种：英文

中文关键词：Strontium carbonate;Carbon reducing reaction;Thermodynamics;Kinetics

摘要：The carbon reducing reaction, the reactants strontium sulphate (SrSO4) and activated carbon are roasted and the product strontium sulphide (SrS) is obtained in the preparation process of strontium carbonate. The experiment is performed with mass ratio SrSO4/C = 1.5, which is studied with emphasis on thermodynamics and kinetics by TG-DSC. 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 explain the mechanism of the reaction, and to calculate the apparent activation energy and reaction orders respectively through TG and DSC. Results show that the apparent activation energy E = 350.6kJ·mol -1 and 307.3 kJ·mol -1 , the reaction orders n = 0.91 and 0.88, respectively.