利用 2步法研究了一水合草酸铵脱水的热分析动力学三因子 :(1 )通过迭代的方法或 KAS法求出较为准确的反应的活化能 Ea;(2 )结合 Coats- Redfern法与 Achar法与所得活化能值比较进一步得出反应的最概然机理函数和指前因子 A.研究发现该反应的最概然机理函数为 :f (α) =1或 g(α) =α,此法所得的计算结果合理且具有很好的重现性 A two-step method was used to study the thermal kinetic three factors of dehydration of ammonium oxalate monohydrate: (1) The activation energy Ea of the more accurate reaction was obtained by iterative method or KAS method; (2) Coat-Redfern method and Achar The most probable mechanism function and the pre-exponential factor A of the reaction are further obtained by comparing the obtained activation energy with the obtained activation energy value A. The most probable mechanism function of the reaction is found as follows: f (α) = 1 or g (α) = α, The results obtained by the method are reasonable and have good reproducibility