中文摘要：

采用水热法合成了Zr W2O8的前驱体Zr W2O7（OH）2（H2O）2,并应用热重分析技术研究了其脱水反应。升温速率β=10℃/min,实验失重率为8.382%,与理论失重率8.452%基本吻合,脱水反应温度在173℃左右。应用非等温方法计算了钨酸锆前驱体脱水反应的动力学参数：表观活化能E=232.54 k J/mol;阿伦尼乌斯指前因子ln A=58.06。前驱体脱水为二级反应,动力学方程可以描述为：dα/dt=10^25.21exp（-27.97×10^3/T）（1-α）^2。

英文摘要：

Zr W2O7（ OH）2（ H2O）2was synthesized by hydrothermal method,which is a precursor for synthesis of zirconium tung state（ Zr W2O8）,and the dehydration reaction in nitrogen atmosphere was investigated via thermogravimetry（ TG） and derivative thermogravimetry（ DTG）. The β of heating rate was 10 ℃ / min,the mass loss occurred at temperatures 173 ℃,and the mass loss was 8. 541%,which was agreement with the theoretical value of 8. 452%. Employing non-isothermal method,the kinetic parameters for dehydration reaction were evaluated. The results showed that apparent activation energy（ E） and pre-exponential factor ln A of the dehydration reaction are 232. 54 k J / mol and 58. 06,respectively. The kinetic equation of dehydration reaction for the precursor could be expressed as： dα / dt = 10^25. 21exp（- 27. 97 × 10^3/ T）（ 1- α）^2.