钨酸钠二水合物脱水过程的动力学研究

1.河北师范大学实验中心,河北,石家庄,050016

2.石家庄铁道学院材料系,河北,石家庄,050043

3.河北职业技术师范学院计算机系,河北,昌黎,066600

4.河北师范大学化学系,河北,石家庄,050016

5.河北师范大学化学系,河北,石家庄,050016

基金项目: 河北省自然科学基金(202139,202140) 河北省教育厅自然科学基金(2001121) 河北师范大学校科研和教改项目(L2001Y12)

Non-Isothermal Kinetics of Dehydration Process of Na2WO4·2H2O

采用TG-DTG技术研究了钨酸钠二水合物在静态空气中的热分解过程及动力学, 其热分解呈现一步脱水过程.运用Malek等提出的热分析动力学数据处理方法, 确定了脱水过程的动力学模型为SB(m, n), 并求得相应动力学参数, 活化能E为91.32 kJ·mol-1, 指前因子lnA为29.65.

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