Thermal characteristics and hazard of 1,3-Butadiene (BD) polymerization and oxidation
Pin Liu, Xiongmin Liu, Tei Saburi, Shiro Kubota, Pinxian Huang, Yuji Wada
Abstract
Accelerated calorimeter (ARC) is widely used to evaluate the hazard of solid or liquid materials, however, there are few literatures on the investigation of gas hazard. In this paper, thermal polymerization and oxidation characteristics of BD were investigated using an ARC. The onset temperature of BD polymerization is 408.5 K under nitrogen atmosphere. Under oxygen atmosphere, the oxidation characteristics of BD with oxygen are: first, pressure is reduced when oxygen reacts with BD, and peroxide is formed; second, an exothermic oxidation reaction has occurred, and the onset temperature of oxidation is 343.2 K, and the activation energy (Ea) of BD oxidation is 112.6 kJ/mol. The products of polymerization and oxidation were analyzed by gas chromatography - mass spectrometry (GC–MS). The brief mechanism of oxidation reaction is described. These results are helpful to understand the characteristics of chemical engineering, and to research and develop the safety technology of BD.