摘要
利用高压DSC(HP-DSC)研究了Na2O-Al2O3-SiO2-H2O体系中生成水化石榴石的反应动力学。采用微分方程法对DSC曲线进行了分析,得到了该反应的动力学参数。结果表明,水化石榴石生成反应的表观活化能为191.17kJ/mol,指前因子为2.767 3s-1,其反应机理为随机成核和随后生长,并符合Mample单行法则。
Generation kinetics of hydrogarnet in Na2O-Al2O3-SiO2-H2O system was investigated by High- pressure Differential Scanning Calorimetry （HP-DSC）. Kinetics parameters of reaction were obtained by analysis on DSC curves with differential equation method. The results show that the apparent activation energy and pre-exponential constant of this reaction are 191.17 kJ/mol and 2. 767 3 s-1 respectively. The reaction mechanism includes random nucleation and growth in accordance with Mample single rule.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2015年第11期47-50,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金联合基金重点项目(U1202274)
国家自然科学基金青年基金项目(51204040)
关键词
水化石榴石
高压DSC
动力学
活化能
hydrogarnet
high-pressure DSC
kinetics
activation energy
