Mechanistic Study on FeS Oxidation

摘要：

More and more People pay attention to the spontaneous combustion accidents of oil which is induced by ferrous sulfides. In this paper the TG and DSC results of FeS samples were gained by the thermal analysis experiments and the oxidative tendency of FeS was studied. It is shown that there are two peaks in the DSC curve of FeS sample. The first peak, which appears at about 142℃, arises from the phase transformation of FeS and the second peak, presenting at higher temperature, is the result of FeS oxidation. The rule of mass constant→mass gain→mass loss→mass constant emerges in the TG curve of FeS. This accords with the FeS oxidation process: phase transformation, physical and chemical adsorption and chemical oxidation. Used model-free method, the kinetic parameters are calculated. The apparent activated energy of FeS is 125.89 kJ/mol and the preexponential factor is equal to 1.55763×l0 11s-1. The oxidative reaction of FeS obey the Avrami-Erofeev kinetic model and

关键词： ferrous sulfide model-free method apparent activated energy kinetic conversion function pre-exponential factor

作者: ZHAO Shengping JIANG Juncheng

作者单位: Nanjing University of Technology,College of Urban Construction and Safety Engineering, Nanjing 210009, Jiangsu, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1307-1311

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）