应用化学2025，Vol.42Issue(6)：811-817,7.DOI:10.19894/j.issn.1000-0518.240381
六氟化硫在氧化与还原气氛中的辐照裂解
Irradiation Cracking of Sulfur Hexafluoride in Oxidizing and Reducing Atmospheres
摘要
Abstract
SF6 is widely used in the power industry as an arc extinguishing insulating gas and is also a hazardous greenhouse gas.The degradation and resource utilization of SF6 is an urgent issue that must be studied.The gamma irradiation of cobalt-60 radioactive source was used to degrade SF6,and the degradation effects in oxidizing or reducing atmospheres were studied.The irradiation results of the mixed gas formed by SF6 with oxygen or hydrogen were analyzed by fourier fransform infrared(FT-IR)spectrometer.A weak absorption peak of sulfuryl fluoride(SO2 F2)appeared in the early stage of irradiation in hydrogen,which was formed after the reaction of SF4 with the adsorbed water on the inner wall of the solid.The intensity of the peak did not change after all the water reacted.The absorption peak of sulfuryl fluoride increased with the increase of absorption dose in oxygen,indicating that oxygen was involved in the formation of sulfuryl fluoride.In addition,other complex oxidation products were formed,and the peak intensities were enhanced with the increase of absorbed dose.Both oxidizing and reducing atmospheres accelerated the degradation of SF6,but the degradation rate is the fastest in hydrogen.According to the kinetic fitting results,the rate constants of SF6 in pure gas,oxygen and hydrogen are 1.70×10-3,6.0×10-3 and 13.3×10-3 L/mol,respectively.This work not only contributes to the utilization of SF6 resources,but also is of great significance to the realization of China's green and environmentally friendly modern power industry and the realization of the goals of"carbon peak"and"carbon neutrality".关键词
六氟化硫/伽马射线/辐照/氧气/氢气/裂解Key words
Sulfur hexafluoride/Gamma rays/Irradiation/Oxygen/Hydrogen/Decomposition分类
化学引用本文复制引用
陈英,杭忱,赵跃,马凤翔,朱峰,赵梦惠,刘和文,许争杰,徐霄筱,程伟..六氟化硫在氧化与还原气氛中的辐照裂解[J].应用化学,2025,42(6):811-817,7.基金项目
国网安徽省电力有限公司科技项目(No.B3120523000R)和国家自然科学基金面上项目(Nos.21871243,51673181)资助 Supported by the State Grid Anhui Electric Power Co.,Ltd.Science and Technology Project(No.B3120523000R)and the National Natural Science Foundation of China(Nos.21871243,51673181) （No.B3120523000R）
