文献类型：会议论文

英文题名：Preparation of anhydrous magnesium chloride from MgCl₂?6H₂O thermal decomposition mechanism of the intermediate product

作者：Song, XF; Wang, J; Wang, XT; Yu, JG

机构：[1]E China Univ Sci & Technol, LRUE, Shanghai 200237, Peoples R China

会议论文集：International Conference on Magnesium - Science, Technology and Applications

会议日期：SEP 20-24, 2004

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：magnesium chloride hex-ammoniate; MgCl2; thermal decomposition kinetics

摘要：Magnesium chloride hex-ammoniate (MgCl2 center dot 6NH(3)) is an intermediate to produce anhydrous magnesium chloride (MgCl2) by method of reaction crystallization. MgCl2-6NH(3) is decomposed at 670K to produce anhydrous magnesium chloride. The process of thermal decomposition and its non-isothermal kinetics Of MgCl2 center dot 6NH(3) is studied. Results show that the thermal decomposition process is made up of three stages, the thermal decomposition functions and the thermal decomposition kinetics parameters, such as activation energy (E), pro-exponential factor (A) of MgCl2 center dot 6NH(3) for each step are obtained by means of the Acher differential, the Coats-Redfiern integral and multi-accelerated heating rate method. This study provides a valuable theoretical basis for MgCl2 center dot 6NH(3) decomposition process on industrialization.