广州化学2024，Vol.49Issue(4)：17-21,5.DOI:10.16560/j.cnki.gzhx.20240418
双氧水及其杂质作用下的热稳定性研究
Thermal Hazards Investigation of Hydrogen Peroxide and Impurities
摘要
Abstract
Differential scanning calorimeter(DSC)was used to detect thermal parameters such as the initial exothermic temperature,peak temperature and reaction heat of different concentrations of hydrogen peroxide and its impurities.The thermal analysis kinetic method is used to analyze and obtain kinetic parameters,such as activation energy and pre-exponential factor.The results show that the initial heat release temperature of 27.5%hydrogen peroxide is between 69 and 130℃,and the specific heat release is 762.36～825.37 J/g.As the heating rate increases,the exothermic temperature of hydrogen peroxide increases.According to the thermal analysis kinetic calculation,the activation energy of 27.5%hydrogen peroxide is 63.63 kJ/mol,and the pre-exponential factor A is 19.29 s-1.Different impurities have different effects on the thermal stability of hydrogen peroxide,and through XPS testing,it can be concluded that Cr3+is doped in hydrogen peroxide will be oxidized into Cr6+.In summary,during the production,transportation and application of hydrogen peroxide,it is necessary to control the appropriate temperature and avoid the introduction of impurities.关键词
双氧水/差示扫描量热仪/热分析动力学/热稳定性Key words
hydrogen peroxide/DSC/thermal analysis kinetics/thermal stability分类
化学化工引用本文复制引用
黎伟欣,桂雪峰,崔晓花,胡继文,刘洋,龚子洋,周仁杰,李炜乐..双氧水及其杂质作用下的热稳定性研究[J].广州化学,2024,49(4):17-21,5.基金项目
国家自然科学基金(214041222) （214041222）
清远科技项目(2022YFJH004) （2022YFJH004）
