【摘要】 研究了废旧聚苯乙烯(PS)塑料高温液相催化氧化降解工艺条件,以乙酸为溶剂,四水乙酸钴、四水乙酸锰为主催化剂,溴化物为助催化剂,在一定的温度和压力下,用空气将聚苯乙烯塑料氧化为苯甲酸(BA),用气质联用法(GC-MC)检测了聚苯乙烯塑氧化降解后的产物成分,尾气中CO和CO2浓度用红外在线分析仪检测,研究了反应温度和混合溶剂比对降解产物比例的影响。结果发现:在最优化条件下,聚苯乙烯能够大量转化为苯甲酸,最高的BA收率已达到78%。更多还原

【Abstract】 The oxidation of waste PS is researched via high temperature liquid-phase process.In the presence of acetic acid used as solvent,acetate cobalt and acetate manganese as main catalyst and bromine hydride as cocatalyst,benzoic acid is obtained by air oxidation of PS at stated reaction temperature and pressure in this process,the product of oxidative degradation was detected by GC-MS,CO and CO2 in the exhaust gas concentration using on-line analyzer infrared detection,research on the reaction temperature and mixed solvent ratio for the impact of degradation products were found: in the most optimum conditions,polystyrene(PS) can translate into a large number of benzoic acid,the highest yield of BA has reached the percent of 78.更多还原