作者:S. A. I. Cazut、E. H. Ramírez Maisuls、M. R. Delfino、J. M. Romero、N. L. Jorge、E. A. Castro
DOI:10.1134/s107036320910017x
日期:2009.10
Thermal decomposition of formaldehyde diperoxide (1,2,4,5-tetraoxane) in aqueous solution with an initial concentration of 6.22 × 10−3 M was studied in the temperatures range from 403 to 439 K. The reaction was found to follow first-order kinetic law, and formaldehyde was the major decomposition product. The activation parameters of the initial step of the reaction (ΔH ≠ = 15.25 ± 0.5 kcal mol−1, ΔS
在403至439 K的温度范围内,研究了初始浓度为6.22×10 -3 M的二氧化甲醛(1,2,4,5-四恶烷)在水溶液中的热分解。动力学规律有序,而甲醛是主要的分解产物。反应初始步骤的活化参数(ΔH ≠ = 15.25±0.5 kcal mol -1,ΔS ≠ = -47.78±0.4 cal mol -1 K -1,E a = 16.09±0.5 kcal mol -1)支持一种机制,该机制涉及1,2,4,5-四恶烷分子中一个过氧化物键的均质断裂,其中溶剂参与并形成双自由基中间体。